diff --git a/activities/PhysicsJS.activity/index.html b/activities/PhysicsJS.activity/index.html
index 54aabd38f..1eafbea4f 100644
--- a/activities/PhysicsJS.activity/index.html
+++ b/activities/PhysicsJS.activity/index.html
@@ -10,7 +10,6 @@
 <link rel="stylesheet" media="screen and (device-width: 1200px) and (device-height: 900px)"
 	href="lib/sugar-web/graphics/css/sugar-200dpi.css">
 <link rel="stylesheet" href="css/activity.css">
-<link rel="prefetch" type="application/l10n" href="localize.ini">
 <link rel="stylesheet" href="css/introjs.css">
 <script>if (typeof module === 'object') {window.module = module; module = undefined;}</script>
 <script src="lib/intro.js"></script>
diff --git a/activities/PhysicsJS.activity/js/activity.js b/activities/PhysicsJS.activity/js/activity.js
index c16f3870d..aabcdaa12 100644
--- a/activities/PhysicsJS.activity/js/activity.js
+++ b/activities/PhysicsJS.activity/js/activity.js
@@ -1,4 +1,4 @@
-define(["sugar-web/activity/activity","tutorial","webL10n","sugar-web/env"], function (activity,tutorial,webL10n,env) {
+define(["sugar-web/activity/activity","tutorial","l10n","sugar-web/env"], function (activity,tutorial,l10n,env) {
 
 	// Manipulate the DOM only when it is ready.
 	requirejs(['domReady!'], function (doc) {
@@ -12,7 +12,7 @@ define(["sugar-web/activity/activity","tutorial","webL10n","sugar-web/env"], fun
 			// Set current language to Sugarizer
 			var defaultLanguage = (typeof chrome != 'undefined' && chrome.app && chrome.app.runtime) ? chrome.i18n.getUILanguage() : navigator.language;
 			var language = environment.user ? environment.user.language : defaultLanguage;
-			webL10n.language.code = language;
+			l10n.init(language);
 		});
 
 		// Initialize cordova
diff --git a/activities/PhysicsJS.activity/lib/axios.min.js b/activities/PhysicsJS.activity/lib/axios.min.js
new file mode 100644
index 000000000..fc6c8b618
--- /dev/null
+++ b/activities/PhysicsJS.activity/lib/axios.min.js
@@ -0,0 +1,3 @@
+/* axios v0.21.1 | (c) 2020 by Matt Zabriskie */
+!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.axios=t():e.axios=t()}(this,function(){return function(e){function t(r){if(n[r])return n[r].exports;var o=n[r]={exports:{},id:r,loaded:!1};return e[r].call(o.exports,o,o.exports,t),o.loaded=!0,o.exports}var n={};return t.m=e,t.c=n,t.p="",t(0)}([function(e,t,n){e.exports=n(1)},function(e,t,n){"use strict";function r(e){var t=new i(e),n=s(i.prototype.request,t);return o.extend(n,i.prototype,t),o.extend(n,t),n}var o=n(2),s=n(3),i=n(4),a=n(22),u=n(10),c=r(u);c.Axios=i,c.create=function(e){return r(a(c.defaults,e))},c.Cancel=n(23),c.CancelToken=n(24),c.isCancel=n(9),c.all=function(e){return Promise.all(e)},c.spread=n(25),c.isAxiosError=n(26),e.exports=c,e.exports.default=c},function(e,t,n){"use strict";function r(e){return"[object Array]"===R.call(e)}function o(e){return"undefined"==typeof e}function s(e){return null!==e&&!o(e)&&null!==e.constructor&&!o(e.constructor)&&"function"==typeof e.constructor.isBuffer&&e.constructor.isBuffer(e)}function i(e){return"[object ArrayBuffer]"===R.call(e)}function a(e){return"undefined"!=typeof FormData&&e instanceof FormData}function u(e){var t;return t="undefined"!=typeof ArrayBuffer&&ArrayBuffer.isView?ArrayBuffer.isView(e):e&&e.buffer&&e.buffer instanceof ArrayBuffer}function c(e){return"string"==typeof e}function f(e){return"number"==typeof e}function p(e){return null!==e&&"object"==typeof e}function d(e){if("[object Object]"!==R.call(e))return!1;var t=Object.getPrototypeOf(e);return null===t||t===Object.prototype}function l(e){return"[object Date]"===R.call(e)}function h(e){return"[object File]"===R.call(e)}function m(e){return"[object Blob]"===R.call(e)}function y(e){return"[object Function]"===R.call(e)}function g(e){return p(e)&&y(e.pipe)}function v(e){return"undefined"!=typeof URLSearchParams&&e instanceof URLSearchParams}function x(e){return e.replace(/^\s*/,"").replace(/\s*$/,"")}function w(){return("undefined"==typeof navigator||"ReactNative"!==navigator.product&&"NativeScript"!==navigator.product&&"NS"!==navigator.product)&&("undefined"!=typeof window&&"undefined"!=typeof document)}function b(e,t){if(null!==e&&"undefined"!=typeof e)if("object"!=typeof e&&(e=[e]),r(e))for(var n=0,o=e.length;n<o;n++)t.call(null,e[n],n,e);else for(var s in e)Object.prototype.hasOwnProperty.call(e,s)&&t.call(null,e[s],s,e)}function E(){function e(e,n){d(t[n])&&d(e)?t[n]=E(t[n],e):d(e)?t[n]=E({},e):r(e)?t[n]=e.slice():t[n]=e}for(var t={},n=0,o=arguments.length;n<o;n++)b(arguments[n],e);return t}function j(e,t,n){return b(t,function(t,r){n&&"function"==typeof t?e[r]=S(t,n):e[r]=t}),e}function C(e){return 65279===e.charCodeAt(0)&&(e=e.slice(1)),e}var S=n(3),R=Object.prototype.toString;e.exports={isArray:r,isArrayBuffer:i,isBuffer:s,isFormData:a,isArrayBufferView:u,isString:c,isNumber:f,isObject:p,isPlainObject:d,isUndefined:o,isDate:l,isFile:h,isBlob:m,isFunction:y,isStream:g,isURLSearchParams:v,isStandardBrowserEnv:w,forEach:b,merge:E,extend:j,trim:x,stripBOM:C}},function(e,t){"use strict";e.exports=function(e,t){return function(){for(var n=new Array(arguments.length),r=0;r<n.length;r++)n[r]=arguments[r];return e.apply(t,n)}}},function(e,t,n){"use strict";function r(e){this.defaults=e,this.interceptors={request:new i,response:new i}}var o=n(2),s=n(5),i=n(6),a=n(7),u=n(22);r.prototype.request=function(e){"string"==typeof e?(e=arguments[1]||{},e.url=arguments[0]):e=e||{},e=u(this.defaults,e),e.method?e.method=e.method.toLowerCase():this.defaults.method?e.method=this.defaults.method.toLowerCase():e.method="get";var t=[a,void 0],n=Promise.resolve(e);for(this.interceptors.request.forEach(function(e){t.unshift(e.fulfilled,e.rejected)}),this.interceptors.response.forEach(function(e){t.push(e.fulfilled,e.rejected)});t.length;)n=n.then(t.shift(),t.shift());return n},r.prototype.getUri=function(e){return e=u(this.defaults,e),s(e.url,e.params,e.paramsSerializer).replace(/^\?/,"")},o.forEach(["delete","get","head","options"],function(e){r.prototype[e]=function(t,n){return this.request(u(n||{},{method:e,url:t,data:(n||{}).data}))}}),o.forEach(["post","put","patch"],function(e){r.prototype[e]=function(t,n,r){return this.request(u(r||{},{method:e,url:t,data:n}))}}),e.exports=r},function(e,t,n){"use strict";function r(e){return encodeURIComponent(e).replace(/%3A/gi,":").replace(/%24/g,"$").replace(/%2C/gi,",").replace(/%20/g,"+").replace(/%5B/gi,"[").replace(/%5D/gi,"]")}var o=n(2);e.exports=function(e,t,n){if(!t)return e;var s;if(n)s=n(t);else if(o.isURLSearchParams(t))s=t.toString();else{var i=[];o.forEach(t,function(e,t){null!==e&&"undefined"!=typeof e&&(o.isArray(e)?t+="[]":e=[e],o.forEach(e,function(e){o.isDate(e)?e=e.toISOString():o.isObject(e)&&(e=JSON.stringify(e)),i.push(r(t)+"="+r(e))}))}),s=i.join("&")}if(s){var a=e.indexOf("#");a!==-1&&(e=e.slice(0,a)),e+=(e.indexOf("?")===-1?"?":"&")+s}return e}},function(e,t,n){"use strict";function r(){this.handlers=[]}var o=n(2);r.prototype.use=function(e,t){return this.handlers.push({fulfilled:e,rejected:t}),this.handlers.length-1},r.prototype.eject=function(e){this.handlers[e]&&(this.handlers[e]=null)},r.prototype.forEach=function(e){o.forEach(this.handlers,function(t){null!==t&&e(t)})},e.exports=r},function(e,t,n){"use strict";function r(e){e.cancelToken&&e.cancelToken.throwIfRequested()}var o=n(2),s=n(8),i=n(9),a=n(10);e.exports=function(e){r(e),e.headers=e.headers||{},e.data=s(e.data,e.headers,e.transformRequest),e.headers=o.merge(e.headers.common||{},e.headers[e.method]||{},e.headers),o.forEach(["delete","get","head","post","put","patch","common"],function(t){delete e.headers[t]});var t=e.adapter||a.adapter;return t(e).then(function(t){return r(e),t.data=s(t.data,t.headers,e.transformResponse),t},function(t){return i(t)||(r(e),t&&t.response&&(t.response.data=s(t.response.data,t.response.headers,e.transformResponse))),Promise.reject(t)})}},function(e,t,n){"use strict";var r=n(2);e.exports=function(e,t,n){return r.forEach(n,function(n){e=n(e,t)}),e}},function(e,t){"use strict";e.exports=function(e){return!(!e||!e.__CANCEL__)}},function(e,t,n){"use strict";function r(e,t){!s.isUndefined(e)&&s.isUndefined(e["Content-Type"])&&(e["Content-Type"]=t)}function o(){var e;return"undefined"!=typeof XMLHttpRequest?e=n(12):"undefined"!=typeof process&&"[object process]"===Object.prototype.toString.call(process)&&(e=n(12)),e}var s=n(2),i=n(11),a={"Content-Type":"application/x-www-form-urlencoded"},u={adapter:o(),transformRequest:[function(e,t){return i(t,"Accept"),i(t,"Content-Type"),s.isFormData(e)||s.isArrayBuffer(e)||s.isBuffer(e)||s.isStream(e)||s.isFile(e)||s.isBlob(e)?e:s.isArrayBufferView(e)?e.buffer:s.isURLSearchParams(e)?(r(t,"application/x-www-form-urlencoded;charset=utf-8"),e.toString()):s.isObject(e)?(r(t,"application/json;charset=utf-8"),JSON.stringify(e)):e}],transformResponse:[function(e){if("string"==typeof e)try{e=JSON.parse(e)}catch(e){}return e}],timeout:0,xsrfCookieName:"XSRF-TOKEN",xsrfHeaderName:"X-XSRF-TOKEN",maxContentLength:-1,maxBodyLength:-1,validateStatus:function(e){return e>=200&&e<300}};u.headers={common:{Accept:"application/json, text/plain, */*"}},s.forEach(["delete","get","head"],function(e){u.headers[e]={}}),s.forEach(["post","put","patch"],function(e){u.headers[e]=s.merge(a)}),e.exports=u},function(e,t,n){"use strict";var r=n(2);e.exports=function(e,t){r.forEach(e,function(n,r){r!==t&&r.toUpperCase()===t.toUpperCase()&&(e[t]=n,delete e[r])})}},function(e,t,n){"use strict";var r=n(2),o=n(13),s=n(16),i=n(5),a=n(17),u=n(20),c=n(21),f=n(14);e.exports=function(e){return new Promise(function(t,n){var p=e.data,d=e.headers;r.isFormData(p)&&delete d["Content-Type"];var l=new XMLHttpRequest;if(e.auth){var h=e.auth.username||"",m=e.auth.password?unescape(encodeURIComponent(e.auth.password)):"";d.Authorization="Basic "+btoa(h+":"+m)}var y=a(e.baseURL,e.url);if(l.open(e.method.toUpperCase(),i(y,e.params,e.paramsSerializer),!0),l.timeout=e.timeout,l.onreadystatechange=function(){if(l&&4===l.readyState&&(0!==l.status||l.responseURL&&0===l.responseURL.indexOf("file:"))){var r="getAllResponseHeaders"in l?u(l.getAllResponseHeaders()):null,s=e.responseType&&"text"!==e.responseType?l.response:l.responseText,i={data:s,status:l.status,statusText:l.statusText,headers:r,config:e,request:l};o(t,n,i),l=null}},l.onabort=function(){l&&(n(f("Request aborted",e,"ECONNABORTED",l)),l=null)},l.onerror=function(){n(f("Network Error",e,null,l)),l=null},l.ontimeout=function(){var t="timeout of "+e.timeout+"ms exceeded";e.timeoutErrorMessage&&(t=e.timeoutErrorMessage),n(f(t,e,"ECONNABORTED",l)),l=null},r.isStandardBrowserEnv()){var g=(e.withCredentials||c(y))&&e.xsrfCookieName?s.read(e.xsrfCookieName):void 0;g&&(d[e.xsrfHeaderName]=g)}if("setRequestHeader"in l&&r.forEach(d,function(e,t){"undefined"==typeof p&&"content-type"===t.toLowerCase()?delete d[t]:l.setRequestHeader(t,e)}),r.isUndefined(e.withCredentials)||(l.withCredentials=!!e.withCredentials),e.responseType)try{l.responseType=e.responseType}catch(t){if("json"!==e.responseType)throw t}"function"==typeof e.onDownloadProgress&&l.addEventListener("progress",e.onDownloadProgress),"function"==typeof e.onUploadProgress&&l.upload&&l.upload.addEventListener("progress",e.onUploadProgress),e.cancelToken&&e.cancelToken.promise.then(function(e){l&&(l.abort(),n(e),l=null)}),p||(p=null),l.send(p)})}},function(e,t,n){"use strict";var r=n(14);e.exports=function(e,t,n){var o=n.config.validateStatus;n.status&&o&&!o(n.status)?t(r("Request failed with status code "+n.status,n.config,null,n.request,n)):e(n)}},function(e,t,n){"use strict";var r=n(15);e.exports=function(e,t,n,o,s){var i=new Error(e);return r(i,t,n,o,s)}},function(e,t){"use strict";e.exports=function(e,t,n,r,o){return e.config=t,n&&(e.code=n),e.request=r,e.response=o,e.isAxiosError=!0,e.toJSON=function(){return{message:this.message,name:this.name,description:this.description,number:this.number,fileName:this.fileName,lineNumber:this.lineNumber,columnNumber:this.columnNumber,stack:this.stack,config:this.config,code:this.code}},e}},function(e,t,n){"use strict";var r=n(2);e.exports=r.isStandardBrowserEnv()?function(){return{write:function(e,t,n,o,s,i){var a=[];a.push(e+"="+encodeURIComponent(t)),r.isNumber(n)&&a.push("expires="+new Date(n).toGMTString()),r.isString(o)&&a.push("path="+o),r.isString(s)&&a.push("domain="+s),i===!0&&a.push("secure"),document.cookie=a.join("; ")},read:function(e){var t=document.cookie.match(new RegExp("(^|;\\s*)("+e+")=([^;]*)"));return t?decodeURIComponent(t[3]):null},remove:function(e){this.write(e,"",Date.now()-864e5)}}}():function(){return{write:function(){},read:function(){return null},remove:function(){}}}()},function(e,t,n){"use strict";var r=n(18),o=n(19);e.exports=function(e,t){return e&&!r(t)?o(e,t):t}},function(e,t){"use strict";e.exports=function(e){return/^([a-z][a-z\d\+\-\.]*:)?\/\//i.test(e)}},function(e,t){"use strict";e.exports=function(e,t){return t?e.replace(/\/+$/,"")+"/"+t.replace(/^\/+/,""):e}},function(e,t,n){"use strict";var r=n(2),o=["age","authorization","content-length","content-type","etag","expires","from","host","if-modified-since","if-unmodified-since","last-modified","location","max-forwards","proxy-authorization","referer","retry-after","user-agent"];e.exports=function(e){var t,n,s,i={};return e?(r.forEach(e.split("\n"),function(e){if(s=e.indexOf(":"),t=r.trim(e.substr(0,s)).toLowerCase(),n=r.trim(e.substr(s+1)),t){if(i[t]&&o.indexOf(t)>=0)return;"set-cookie"===t?i[t]=(i[t]?i[t]:[]).concat([n]):i[t]=i[t]?i[t]+", "+n:n}}),i):i}},function(e,t,n){"use strict";var r=n(2);e.exports=r.isStandardBrowserEnv()?function(){function e(e){var t=e;return n&&(o.setAttribute("href",t),t=o.href),o.setAttribute("href",t),{href:o.href,protocol:o.protocol?o.protocol.replace(/:$/,""):"",host:o.host,search:o.search?o.search.replace(/^\?/,""):"",hash:o.hash?o.hash.replace(/^#/,""):"",hostname:o.hostname,port:o.port,pathname:"/"===o.pathname.charAt(0)?o.pathname:"/"+o.pathname}}var t,n=/(msie|trident)/i.test(navigator.userAgent),o=document.createElement("a");return t=e(window.location.href),function(n){var o=r.isString(n)?e(n):n;return o.protocol===t.protocol&&o.host===t.host}}():function(){return function(){return!0}}()},function(e,t,n){"use strict";var r=n(2);e.exports=function(e,t){function n(e,t){return r.isPlainObject(e)&&r.isPlainObject(t)?r.merge(e,t):r.isPlainObject(t)?r.merge({},t):r.isArray(t)?t.slice():t}function o(o){r.isUndefined(t[o])?r.isUndefined(e[o])||(s[o]=n(void 0,e[o])):s[o]=n(e[o],t[o])}t=t||{};var s={},i=["url","method","data"],a=["headers","auth","proxy","params"],u=["baseURL","transformRequest","transformResponse","paramsSerializer","timeout","timeoutMessage","withCredentials","adapter","responseType","xsrfCookieName","xsrfHeaderName","onUploadProgress","onDownloadProgress","decompress","maxContentLength","maxBodyLength","maxRedirects","transport","httpAgent","httpsAgent","cancelToken","socketPath","responseEncoding"],c=["validateStatus"];r.forEach(i,function(e){r.isUndefined(t[e])||(s[e]=n(void 0,t[e]))}),r.forEach(a,o),r.forEach(u,function(o){r.isUndefined(t[o])?r.isUndefined(e[o])||(s[o]=n(void 0,e[o])):s[o]=n(void 0,t[o])}),r.forEach(c,function(r){r in t?s[r]=n(e[r],t[r]):r in e&&(s[r]=n(void 0,e[r]))});var f=i.concat(a).concat(u).concat(c),p=Object.keys(e).concat(Object.keys(t)).filter(function(e){return f.indexOf(e)===-1});return r.forEach(p,o),s}},function(e,t){"use strict";function n(e){this.message=e}n.prototype.toString=function(){return"Cancel"+(this.message?": "+this.message:"")},n.prototype.__CANCEL__=!0,e.exports=n},function(e,t,n){"use strict";function r(e){if("function"!=typeof e)throw new TypeError("executor must be a function.");var t;this.promise=new Promise(function(e){t=e});var n=this;e(function(e){n.reason||(n.reason=new o(e),t(n.reason))})}var o=n(23);r.prototype.throwIfRequested=function(){if(this.reason)throw this.reason},r.source=function(){var e,t=new r(function(t){e=t});return{token:t,cancel:e}},e.exports=r},function(e,t){"use strict";e.exports=function(e){return function(t){return e.apply(null,t)}}},function(e,t){"use strict";e.exports=function(e){return"object"==typeof e&&e.isAxiosError===!0}}])});
+//# sourceMappingURL=axios.min.map
\ No newline at end of file
diff --git a/activities/PhysicsJS.activity/lib/i18next.min.js b/activities/PhysicsJS.activity/lib/i18next.min.js
new file mode 100644
index 000000000..08f5469cf
--- /dev/null
+++ b/activities/PhysicsJS.activity/lib/i18next.min.js
@@ -0,0 +1 @@
+!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e="undefined"!=typeof globalThis?globalThis:e||self).i18next=t()}(this,function(){"use strict";function e(t){return(e="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(t)}function t(e,t,n){return t in e?Object.defineProperty(e,t,{value:n,enumerable:!0,configurable:!0,writable:!0}):e[t]=n,e}function n(e){for(var n=1;n<arguments.length;n++){var i=null!=arguments[n]?Object(arguments[n]):{},o=Object.keys(i);"function"==typeof Object.getOwnPropertySymbols&&(o=o.concat(Object.getOwnPropertySymbols(i).filter(function(e){return Object.getOwnPropertyDescriptor(i,e).enumerable}))),o.forEach(function(n){t(e,n,i[n])})}return e}function i(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function o(e,t){for(var n=0;n<t.length;n++){var i=t[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(e,i.key,i)}}function r(e,t,n){return t&&o(e.prototype,t),n&&o(e,n),e}function a(e){if(void 0===e)throw new ReferenceError("this hasn't been initialised - super() hasn't been called");return e}function s(t,n){return!n||"object"!==e(n)&&"function"!=typeof n?a(t):n}function u(e){return(u=Object.setPrototypeOf?Object.getPrototypeOf:function(e){return e.__proto__||Object.getPrototypeOf(e)})(e)}function l(e,t){return(l=Object.setPrototypeOf||function(e,t){return e.__proto__=t,e})(e,t)}function c(e,t){if("function"!=typeof t&&null!==t)throw new TypeError("Super expression must either be null or a function");e.prototype=Object.create(t&&t.prototype,{constructor:{value:e,writable:!0,configurable:!0}}),t&&l(e,t)}var p={type:"logger",log:function(e){this.output("log",e)},warn:function(e){this.output("warn",e)},error:function(e){this.output("error",e)},output:function(e,t){console&&console[e]&&console[e].apply(console,t)}},g=new(function(){function e(t){var n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};i(this,e),this.init(t,n)}return r(e,[{key:"init",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};this.prefix=t.prefix||"i18next:",this.logger=e||p,this.options=t,this.debug=t.debug}},{key:"setDebug",value:function(e){this.debug=e}},{key:"log",value:function(){for(var e=arguments.length,t=new Array(e),n=0;n<e;n++)t[n]=arguments[n];return this.forward(t,"log","",!0)}},{key:"warn",value:function(){for(var e=arguments.length,t=new Array(e),n=0;n<e;n++)t[n]=arguments[n];return this.forward(t,"warn","",!0)}},{key:"error",value:function(){for(var e=arguments.length,t=new Array(e),n=0;n<e;n++)t[n]=arguments[n];return this.forward(t,"error","")}},{key:"deprecate",value:function(){for(var e=arguments.length,t=new Array(e),n=0;n<e;n++)t[n]=arguments[n];return this.forward(t,"warn","WARNING DEPRECATED: ",!0)}},{key:"forward",value:function(e,t,n,i){return i&&!this.debug?null:("string"==typeof e[0]&&(e[0]="".concat(n).concat(this.prefix," ").concat(e[0])),this.logger[t](e))}},{key:"create",value:function(t){return new e(this.logger,n({},{prefix:"".concat(this.prefix,":").concat(t,":")},this.options))}}]),e}()),f=function(){function e(){i(this,e),this.observers={}}return r(e,[{key:"on",value:function(e,t){var n=this;return e.split(" ").forEach(function(e){n.observers[e]=n.observers[e]||[],n.observers[e].push(t)}),this}},{key:"off",value:function(e,t){this.observers[e]&&(t?this.observers[e]=this.observers[e].filter(function(e){return e!==t}):delete this.observers[e])}},{key:"emit",value:function(e){for(var t=arguments.length,n=new Array(t>1?t-1:0),i=1;i<t;i++)n[i-1]=arguments[i];this.observers[e]&&[].concat(this.observers[e]).forEach(function(e){e.apply(void 0,n)});this.observers["*"]&&[].concat(this.observers["*"]).forEach(function(t){t.apply(t,[e].concat(n))})}}]),e}();function h(){var e,t,n=new Promise(function(n,i){e=n,t=i});return n.resolve=e,n.reject=t,n}function d(e){return null==e?"":""+e}function v(e,t,n){function i(e){return e&&e.indexOf("###")>-1?e.replace(/###/g,"."):e}function o(){return!e||"string"==typeof e}for(var r="string"!=typeof t?[].concat(t):t.split(".");r.length>1;){if(o())return{};var a=i(r.shift());!e[a]&&n&&(e[a]=new n),e=Object.prototype.hasOwnProperty.call(e,a)?e[a]:{}}return o()?{}:{obj:e,k:i(r.shift())}}function y(e,t,n){var i=v(e,t,Object);i.obj[i.k]=n}function m(e,t){var n=v(e,t),i=n.obj,o=n.k;if(i)return i[o]}function b(e,t,n){var i=m(e,n);return void 0!==i?i:m(t,n)}function k(e){return e.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g,"\\$&")}var x={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;","/":"&#x2F;"};function S(e){return"string"==typeof e?e.replace(/[&<>"'\/]/g,function(e){return x[e]}):e}var w="undefined"!=typeof window&&window.navigator&&window.navigator.userAgent&&window.navigator.userAgent.indexOf("MSIE")>-1;var L=function(e){function t(e){var n,o=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{ns:["translation"],defaultNS:"translation"};return i(this,t),n=s(this,u(t).call(this)),w&&f.call(a(n)),n.data=e||{},n.options=o,void 0===n.options.keySeparator&&(n.options.keySeparator="."),void 0===n.options.ignoreJSONStructure&&(n.options.ignoreJSONStructure=!0),n}return c(t,f),r(t,[{key:"addNamespaces",value:function(e){this.options.ns.indexOf(e)<0&&this.options.ns.push(e)}},{key:"removeNamespaces",value:function(e){var t=this.options.ns.indexOf(e);t>-1&&this.options.ns.splice(t,1)}},{key:"getResource",value:function(e,t,n){var i=arguments.length>3&&void 0!==arguments[3]?arguments[3]:{},o=void 0!==i.keySeparator?i.keySeparator:this.options.keySeparator,r=void 0!==i.ignoreJSONStructure?i.ignoreJSONStructure:this.options.ignoreJSONStructure,a=[e,t];n&&"string"!=typeof n&&(a=a.concat(n)),n&&"string"==typeof n&&(a=a.concat(o?n.split(o):n)),e.indexOf(".")>-1&&(a=e.split("."));var s=m(this.data,a);return s||!r||"string"!=typeof n?s:function e(t,n){var i=arguments.length>2&&void 0!==arguments[2]?arguments[2]:".";if(t){if(t[n])return t[n];for(var o=n.split(i),r=t,a=0;a<o.length;++a){if("string"==typeof r[o[a]]&&a+1<o.length)return;if(void 0===r[o[a]]){for(var s=2,u=o.slice(a,a+s).join(i),l=r[u];void 0===l&&o.length>a+s;)s++,l=r[u=o.slice(a,a+s).join(i)];if(void 0===l)return;if("string"==typeof l)return l;if(u&&"string"==typeof l[u])return l[u];var c=o.slice(a+s).join(i);return c?e(l,c,i):void 0}r=r[o[a]]}return r}}(this.data&&this.data[e]&&this.data[e][t],n,o)}},{key:"addResource",value:function(e,t,n,i){var o=arguments.length>4&&void 0!==arguments[4]?arguments[4]:{silent:!1},r=this.options.keySeparator;void 0===r&&(r=".");var a=[e,t];n&&(a=a.concat(r?n.split(r):n)),e.indexOf(".")>-1&&(i=t,t=(a=e.split("."))[1]),this.addNamespaces(t),y(this.data,a,i),o.silent||this.emit("added",e,t,n,i)}},{key:"addResources",value:function(e,t,n){var i=arguments.length>3&&void 0!==arguments[3]?arguments[3]:{silent:!1};for(var o in n)"string"!=typeof n[o]&&"[object Array]"!==Object.prototype.toString.apply(n[o])||this.addResource(e,t,o,n[o],{silent:!0});i.silent||this.emit("added",e,t,n)}},{key:"addResourceBundle",value:function(e,t,i,o,r){var a=arguments.length>5&&void 0!==arguments[5]?arguments[5]:{silent:!1},s=[e,t];e.indexOf(".")>-1&&(o=i,i=t,t=(s=e.split("."))[1]),this.addNamespaces(t);var u=m(this.data,s)||{};o?function e(t,n,i){for(var o in n)"__proto__"!==o&&"constructor"!==o&&(o in t?"string"==typeof t[o]||t[o]instanceof String||"string"==typeof n[o]||n[o]instanceof String?i&&(t[o]=n[o]):e(t[o],n[o],i):t[o]=n[o]);return t}(u,i,r):u=n({},u,i),y(this.data,s,u),a.silent||this.emit("added",e,t,i)}},{key:"removeResourceBundle",value:function(e,t){this.hasResourceBundle(e,t)&&delete this.data[e][t],this.removeNamespaces(t),this.emit("removed",e,t)}},{key:"hasResourceBundle",value:function(e,t){return void 0!==this.getResource(e,t)}},{key:"getResourceBundle",value:function(e,t){return t||(t=this.options.defaultNS),"v1"===this.options.compatibilityAPI?n({},{},this.getResource(e,t)):this.getResource(e,t)}},{key:"getDataByLanguage",value:function(e){return this.data[e]}},{key:"toJSON",value:function(){return this.data}}]),t}(),O={processors:{},addPostProcessor:function(e){this.processors[e.name]=e},handle:function(e,t,n,i,o){var r=this;return e.forEach(function(e){r.processors[e]&&(t=r.processors[e].process(t,n,i,o))}),t}},N={},R=function(t){function o(e){var t,n,r,l,c=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};return i(this,o),t=s(this,u(o).call(this)),w&&f.call(a(t)),n=["resourceStore","languageUtils","pluralResolver","interpolator","backendConnector","i18nFormat","utils"],r=e,l=a(t),n.forEach(function(e){r[e]&&(l[e]=r[e])}),t.options=c,void 0===t.options.keySeparator&&(t.options.keySeparator="."),t.logger=g.create("translator"),t}return c(o,f),r(o,[{key:"changeLanguage",value:function(e){e&&(this.language=e)}},{key:"exists",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{interpolation:{}},n=this.resolve(e,t);return n&&void 0!==n.res}},{key:"extractFromKey",value:function(e,t){var n=void 0!==t.nsSeparator?t.nsSeparator:this.options.nsSeparator;void 0===n&&(n=":");var i=void 0!==t.keySeparator?t.keySeparator:this.options.keySeparator,o=t.ns||this.options.defaultNS;if(n&&e.indexOf(n)>-1){var r=e.match(this.interpolator.nestingRegexp);if(r&&r.length>0)return{key:e,namespaces:o};var a=e.split(n);(n!==i||n===i&&this.options.ns.indexOf(a[0])>-1)&&(o=a.shift()),e=a.join(i)}return"string"==typeof o&&(o=[o]),{key:e,namespaces:o}}},{key:"translate",value:function(t,i,r){var a=this;if("object"!==e(i)&&this.options.overloadTranslationOptionHandler&&(i=this.options.overloadTranslationOptionHandler(arguments)),i||(i={}),null==t)return"";Array.isArray(t)||(t=[String(t)]);var s=void 0!==i.keySeparator?i.keySeparator:this.options.keySeparator,u=this.extractFromKey(t[t.length-1],i),l=u.key,c=u.namespaces,p=c[c.length-1],g=i.lng||this.language,f=i.appendNamespaceToCIMode||this.options.appendNamespaceToCIMode;if(g&&"cimode"===g.toLowerCase()){if(f){var h=i.nsSeparator||this.options.nsSeparator;return p+h+l}return l}var d=this.resolve(t,i),v=d&&d.res,y=d&&d.usedKey||l,m=d&&d.exactUsedKey||l,b=Object.prototype.toString.apply(v),k=void 0!==i.joinArrays?i.joinArrays:this.options.joinArrays,x=!this.i18nFormat||this.i18nFormat.handleAsObject;if(x&&v&&("string"!=typeof v&&"boolean"!=typeof v&&"number"!=typeof v)&&["[object Number]","[object Function]","[object RegExp]"].indexOf(b)<0&&("string"!=typeof k||"[object Array]"!==b)){if(!i.returnObjects&&!this.options.returnObjects)return this.logger.warn("accessing an object - but returnObjects options is not enabled!"),this.options.returnedObjectHandler?this.options.returnedObjectHandler(y,v,i):"key '".concat(l," (").concat(this.language,")' returned an object instead of string.");if(s){var S="[object Array]"===b,w=S?[]:{},L=S?m:y;for(var O in v)if(Object.prototype.hasOwnProperty.call(v,O)){var N="".concat(L).concat(s).concat(O);w[O]=this.translate(N,n({},i,{joinArrays:!1,ns:c})),w[O]===N&&(w[O]=v[O])}v=w}}else if(x&&"string"==typeof k&&"[object Array]"===b)(v=v.join(k))&&(v=this.extendTranslation(v,t,i,r));else{var R=!1,C=!1,j=void 0!==i.count&&"string"!=typeof i.count,E=o.hasDefaultValue(i),P=j?this.pluralResolver.getSuffix(g,i.count):"",F=i["defaultValue".concat(P)]||i.defaultValue;!this.isValidLookup(v)&&E&&(R=!0,v=F),this.isValidLookup(v)||(C=!0,v=l);var V=E&&F!==v&&this.options.updateMissing;if(C||R||V){if(this.logger.log(V?"updateKey":"missingKey",g,p,l,V?F:v),s){var T=this.resolve(l,n({},i,{keySeparator:!1}));T&&T.res&&this.logger.warn("Seems the loaded translations were in flat JSON format instead of nested. Either set keySeparator: false on init or make sure your translations are published in nested format.")}var A=[],U=this.languageUtils.getFallbackCodes(this.options.fallbackLng,i.lng||this.language);if("fallback"===this.options.saveMissingTo&&U&&U[0])for(var I=0;I<U.length;I++)A.push(U[I]);else"all"===this.options.saveMissingTo?A=this.languageUtils.toResolveHierarchy(i.lng||this.language):A.push(i.lng||this.language);var D=function(e,t,n){a.options.missingKeyHandler?a.options.missingKeyHandler(e,p,t,V?n:v,V,i):a.backendConnector&&a.backendConnector.saveMissing&&a.backendConnector.saveMissing(e,p,t,V?n:v,V,i),a.emit("missingKey",e,p,t,v)};this.options.saveMissing&&(this.options.saveMissingPlurals&&j?A.forEach(function(e){a.pluralResolver.getSuffixes(e).forEach(function(t){D([e],l+t,i["defaultValue".concat(t)]||F)})}):D(A,l,F))}v=this.extendTranslation(v,t,i,d,r),C&&v===l&&this.options.appendNamespaceToMissingKey&&(v="".concat(p,":").concat(l)),C&&this.options.parseMissingKeyHandler&&(v=this.options.parseMissingKeyHandler(v))}return v}},{key:"extendTranslation",value:function(e,t,i,o,r){var a=this;if(this.i18nFormat&&this.i18nFormat.parse)e=this.i18nFormat.parse(e,i,o.usedLng,o.usedNS,o.usedKey,{resolved:o});else if(!i.skipInterpolation){i.interpolation&&this.interpolator.init(n({},i,{interpolation:n({},this.options.interpolation,i.interpolation)}));var s,u=i.interpolation&&i.interpolation.skipOnVariables||this.options.interpolation.skipOnVariables;if(u){var l=e.match(this.interpolator.nestingRegexp);s=l&&l.length}var c=i.replace&&"string"!=typeof i.replace?i.replace:i;if(this.options.interpolation.defaultVariables&&(c=n({},this.options.interpolation.defaultVariables,c)),e=this.interpolator.interpolate(e,c,i.lng||this.language,i),u){var p=e.match(this.interpolator.nestingRegexp);s<(p&&p.length)&&(i.nest=!1)}!1!==i.nest&&(e=this.interpolator.nest(e,function(){for(var e=arguments.length,n=new Array(e),o=0;o<e;o++)n[o]=arguments[o];return r&&r[0]===n[0]&&!i.context?(a.logger.warn("It seems you are nesting recursively key: ".concat(n[0]," in key: ").concat(t[0])),null):a.translate.apply(a,n.concat([t]))},i)),i.interpolation&&this.interpolator.reset()}var g=i.postProcess||this.options.postProcess,f="string"==typeof g?[g]:g;return null!=e&&f&&f.length&&!1!==i.applyPostProcessor&&(e=O.handle(f,e,t,this.options&&this.options.postProcessPassResolved?n({i18nResolved:o},i):i,this)),e}},{key:"resolve",value:function(e){var t,n,i,o,r,a=this,s=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};return"string"==typeof e&&(e=[e]),e.forEach(function(e){if(!a.isValidLookup(t)){var u=a.extractFromKey(e,s),l=u.key;n=l;var c=u.namespaces;a.options.fallbackNS&&(c=c.concat(a.options.fallbackNS));var p=void 0!==s.count&&"string"!=typeof s.count,g=void 0!==s.context&&"string"==typeof s.context&&""!==s.context,f=s.lngs?s.lngs:a.languageUtils.toResolveHierarchy(s.lng||a.language,s.fallbackLng);c.forEach(function(e){a.isValidLookup(t)||(r=e,!N["".concat(f[0],"-").concat(e)]&&a.utils&&a.utils.hasLoadedNamespace&&!a.utils.hasLoadedNamespace(r)&&(N["".concat(f[0],"-").concat(e)]=!0,a.logger.warn('key "'.concat(n,'" for languages "').concat(f.join(", "),'" won\'t get resolved as namespace "').concat(r,'" was not yet loaded'),"This means something IS WRONG in your setup. You access the t function before i18next.init / i18next.loadNamespace / i18next.changeLanguage was done. Wait for the callback or Promise to resolve before accessing it!!!")),f.forEach(function(n){if(!a.isValidLookup(t)){o=n;var r,u,c=l,f=[c];if(a.i18nFormat&&a.i18nFormat.addLookupKeys)a.i18nFormat.addLookupKeys(f,l,n,e,s);else p&&(r=a.pluralResolver.getSuffix(n,s.count)),p&&g&&f.push(c+r),g&&f.push(c+="".concat(a.options.contextSeparator).concat(s.context)),p&&f.push(c+=r);for(;u=f.pop();)a.isValidLookup(t)||(i=u,t=a.getResource(n,e,u,s))}}))})}}),{res:t,usedKey:n,exactUsedKey:i,usedLng:o,usedNS:r}}},{key:"isValidLookup",value:function(e){return!(void 0===e||!this.options.returnNull&&null===e||!this.options.returnEmptyString&&""===e)}},{key:"getResource",value:function(e,t,n){var i=arguments.length>3&&void 0!==arguments[3]?arguments[3]:{};return this.i18nFormat&&this.i18nFormat.getResource?this.i18nFormat.getResource(e,t,n,i):this.resourceStore.getResource(e,t,n,i)}}],[{key:"hasDefaultValue",value:function(e){for(var t in e)if(Object.prototype.hasOwnProperty.call(e,t)&&"defaultValue"===t.substring(0,"defaultValue".length)&&void 0!==e[t])return!0;return!1}}]),o}();function C(e){return e.charAt(0).toUpperCase()+e.slice(1)}var j=function(){function e(t){i(this,e),this.options=t,this.whitelist=this.options.supportedLngs||!1,this.supportedLngs=this.options.supportedLngs||!1,this.logger=g.create("languageUtils")}return r(e,[{key:"getScriptPartFromCode",value:function(e){if(!e||e.indexOf("-")<0)return null;var t=e.split("-");return 2===t.length?null:(t.pop(),"x"===t[t.length-1].toLowerCase()?null:this.formatLanguageCode(t.join("-")))}},{key:"getLanguagePartFromCode",value:function(e){if(!e||e.indexOf("-")<0)return e;var t=e.split("-");return this.formatLanguageCode(t[0])}},{key:"formatLanguageCode",value:function(e){if("string"==typeof e&&e.indexOf("-")>-1){var t=["hans","hant","latn","cyrl","cans","mong","arab"],n=e.split("-");return this.options.lowerCaseLng?n=n.map(function(e){return e.toLowerCase()}):2===n.length?(n[0]=n[0].toLowerCase(),n[1]=n[1].toUpperCase(),t.indexOf(n[1].toLowerCase())>-1&&(n[1]=C(n[1].toLowerCase()))):3===n.length&&(n[0]=n[0].toLowerCase(),2===n[1].length&&(n[1]=n[1].toUpperCase()),"sgn"!==n[0]&&2===n[2].length&&(n[2]=n[2].toUpperCase()),t.indexOf(n[1].toLowerCase())>-1&&(n[1]=C(n[1].toLowerCase())),t.indexOf(n[2].toLowerCase())>-1&&(n[2]=C(n[2].toLowerCase()))),n.join("-")}return this.options.cleanCode||this.options.lowerCaseLng?e.toLowerCase():e}},{key:"isWhitelisted",value:function(e){return this.logger.deprecate("languageUtils.isWhitelisted",'function "isWhitelisted" will be renamed to "isSupportedCode" in the next major - please make sure to rename it\'s usage asap.'),this.isSupportedCode(e)}},{key:"isSupportedCode",value:function(e){return("languageOnly"===this.options.load||this.options.nonExplicitSupportedLngs)&&(e=this.getLanguagePartFromCode(e)),!this.supportedLngs||!this.supportedLngs.length||this.supportedLngs.indexOf(e)>-1}},{key:"getBestMatchFromCodes",value:function(e){var t,n=this;return e?(e.forEach(function(e){if(!t){var i=n.formatLanguageCode(e);n.options.supportedLngs&&!n.isSupportedCode(i)||(t=i)}}),!t&&this.options.supportedLngs&&e.forEach(function(e){if(!t){var i=n.getLanguagePartFromCode(e);if(n.isSupportedCode(i))return t=i;t=n.options.supportedLngs.find(function(e){if(0===e.indexOf(i))return e})}}),t||(t=this.getFallbackCodes(this.options.fallbackLng)[0]),t):null}},{key:"getFallbackCodes",value:function(e,t){if(!e)return[];if("function"==typeof e&&(e=e(t)),"string"==typeof e&&(e=[e]),"[object Array]"===Object.prototype.toString.apply(e))return e;if(!t)return e.default||[];var n=e[t];return n||(n=e[this.getScriptPartFromCode(t)]),n||(n=e[this.formatLanguageCode(t)]),n||(n=e[this.getLanguagePartFromCode(t)]),n||(n=e.default),n||[]}},{key:"toResolveHierarchy",value:function(e,t){var n=this,i=this.getFallbackCodes(t||this.options.fallbackLng||[],e),o=[],r=function(e){e&&(n.isSupportedCode(e)?o.push(e):n.logger.warn("rejecting language code not found in supportedLngs: ".concat(e)))};return"string"==typeof e&&e.indexOf("-")>-1?("languageOnly"!==this.options.load&&r(this.formatLanguageCode(e)),"languageOnly"!==this.options.load&&"currentOnly"!==this.options.load&&r(this.getScriptPartFromCode(e)),"currentOnly"!==this.options.load&&r(this.getLanguagePartFromCode(e))):"string"==typeof e&&r(this.formatLanguageCode(e)),i.forEach(function(e){o.indexOf(e)<0&&r(n.formatLanguageCode(e))}),o}}]),e}(),E=[{lngs:["ach","ak","am","arn","br","fil","gun","ln","mfe","mg","mi","oc","pt","pt-BR","tg","tl","ti","tr","uz","wa"],nr:[1,2],fc:1},{lngs:["af","an","ast","az","bg","bn","ca","da","de","dev","el","en","eo","es","et","eu","fi","fo","fur","fy","gl","gu","ha","hi","hu","hy","ia","it","kk","kn","ku","lb","mai","ml","mn","mr","nah","nap","nb","ne","nl","nn","no","nso","pa","pap","pms","ps","pt-PT","rm","sco","se","si","so","son","sq","sv","sw","ta","te","tk","ur","yo"],nr:[1,2],fc:2},{lngs:["ay","bo","cgg","fa","ht","id","ja","jbo","ka","km","ko","ky","lo","ms","sah","su","th","tt","ug","vi","wo","zh"],nr:[1],fc:3},{lngs:["be","bs","cnr","dz","hr","ru","sr","uk"],nr:[1,2,5],fc:4},{lngs:["ar"],nr:[0,1,2,3,11,100],fc:5},{lngs:["cs","sk"],nr:[1,2,5],fc:6},{lngs:["csb","pl"],nr:[1,2,5],fc:7},{lngs:["cy"],nr:[1,2,3,8],fc:8},{lngs:["fr"],nr:[1,2],fc:9},{lngs:["ga"],nr:[1,2,3,7,11],fc:10},{lngs:["gd"],nr:[1,2,3,20],fc:11},{lngs:["is"],nr:[1,2],fc:12},{lngs:["jv"],nr:[0,1],fc:13},{lngs:["kw"],nr:[1,2,3,4],fc:14},{lngs:["lt"],nr:[1,2,10],fc:15},{lngs:["lv"],nr:[1,2,0],fc:16},{lngs:["mk"],nr:[1,2],fc:17},{lngs:["mnk"],nr:[0,1,2],fc:18},{lngs:["mt"],nr:[1,2,11,20],fc:19},{lngs:["or"],nr:[2,1],fc:2},{lngs:["ro"],nr:[1,2,20],fc:20},{lngs:["sl"],nr:[5,1,2,3],fc:21},{lngs:["he","iw"],nr:[1,2,20,21],fc:22}],P={1:function(e){return Number(e>1)},2:function(e){return Number(1!=e)},3:function(e){return 0},4:function(e){return Number(e%10==1&&e%100!=11?0:e%10>=2&&e%10<=4&&(e%100<10||e%100>=20)?1:2)},5:function(e){return Number(0==e?0:1==e?1:2==e?2:e%100>=3&&e%100<=10?3:e%100>=11?4:5)},6:function(e){return Number(1==e?0:e>=2&&e<=4?1:2)},7:function(e){return Number(1==e?0:e%10>=2&&e%10<=4&&(e%100<10||e%100>=20)?1:2)},8:function(e){return Number(1==e?0:2==e?1:8!=e&&11!=e?2:3)},9:function(e){return Number(e>=2)},10:function(e){return Number(1==e?0:2==e?1:e<7?2:e<11?3:4)},11:function(e){return Number(1==e||11==e?0:2==e||12==e?1:e>2&&e<20?2:3)},12:function(e){return Number(e%10!=1||e%100==11)},13:function(e){return Number(0!==e)},14:function(e){return Number(1==e?0:2==e?1:3==e?2:3)},15:function(e){return Number(e%10==1&&e%100!=11?0:e%10>=2&&(e%100<10||e%100>=20)?1:2)},16:function(e){return Number(e%10==1&&e%100!=11?0:0!==e?1:2)},17:function(e){return Number(1==e||e%10==1&&e%100!=11?0:1)},18:function(e){return Number(0==e?0:1==e?1:2)},19:function(e){return Number(1==e?0:0==e||e%100>1&&e%100<11?1:e%100>10&&e%100<20?2:3)},20:function(e){return Number(1==e?0:0==e||e%100>0&&e%100<20?1:2)},21:function(e){return Number(e%100==1?1:e%100==2?2:e%100==3||e%100==4?3:0)},22:function(e){return Number(1==e?0:2==e?1:(e<0||e>10)&&e%10==0?2:3)}};var F=function(){function e(t){var n,o=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};i(this,e),this.languageUtils=t,this.options=o,this.logger=g.create("pluralResolver"),this.rules=(n={},E.forEach(function(e){e.lngs.forEach(function(t){n[t]={numbers:e.nr,plurals:P[e.fc]}})}),n)}return r(e,[{key:"addRule",value:function(e,t){this.rules[e]=t}},{key:"getRule",value:function(e){return this.rules[e]||this.rules[this.languageUtils.getLanguagePartFromCode(e)]}},{key:"needsPlural",value:function(e){var t=this.getRule(e);return t&&t.numbers.length>1}},{key:"getPluralFormsOfKey",value:function(e,t){return this.getSuffixes(e).map(function(e){return t+e})}},{key:"getSuffixes",value:function(e){var t=this,n=this.getRule(e);return n?n.numbers.map(function(n){return t.getSuffix(e,n)}):[]}},{key:"getSuffix",value:function(e,t){var n=this,i=this.getRule(e);if(i){var o=i.noAbs?i.plurals(t):i.plurals(Math.abs(t)),r=i.numbers[o];this.options.simplifyPluralSuffix&&2===i.numbers.length&&1===i.numbers[0]&&(2===r?r="plural":1===r&&(r=""));var a=function(){return n.options.prepend&&r.toString()?n.options.prepend+r.toString():r.toString()};return"v1"===this.options.compatibilityJSON?1===r?"":"number"==typeof r?"_plural_".concat(r.toString()):a():"v2"===this.options.compatibilityJSON?a():this.options.simplifyPluralSuffix&&2===i.numbers.length&&1===i.numbers[0]?a():this.options.prepend&&o.toString()?this.options.prepend+o.toString():o.toString()}return this.logger.warn("no plural rule found for: ".concat(e)),""}}]),e}(),V=function(){function e(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};i(this,e),this.logger=g.create("interpolator"),this.options=t,this.format=t.interpolation&&t.interpolation.format||function(e){return e},this.init(t)}return r(e,[{key:"init",value:function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};e.interpolation||(e.interpolation={escapeValue:!0});var t=e.interpolation;this.escape=void 0!==t.escape?t.escape:S,this.escapeValue=void 0===t.escapeValue||t.escapeValue,this.useRawValueToEscape=void 0!==t.useRawValueToEscape&&t.useRawValueToEscape,this.prefix=t.prefix?k(t.prefix):t.prefixEscaped||"{{",this.suffix=t.suffix?k(t.suffix):t.suffixEscaped||"}}",this.formatSeparator=t.formatSeparator?t.formatSeparator:t.formatSeparator||",",this.unescapePrefix=t.unescapeSuffix?"":t.unescapePrefix||"-",this.unescapeSuffix=this.unescapePrefix?"":t.unescapeSuffix||"",this.nestingPrefix=t.nestingPrefix?k(t.nestingPrefix):t.nestingPrefixEscaped||k("$t("),this.nestingSuffix=t.nestingSuffix?k(t.nestingSuffix):t.nestingSuffixEscaped||k(")"),this.nestingOptionsSeparator=t.nestingOptionsSeparator?t.nestingOptionsSeparator:t.nestingOptionsSeparator||",",this.maxReplaces=t.maxReplaces?t.maxReplaces:1e3,this.alwaysFormat=void 0!==t.alwaysFormat&&t.alwaysFormat,this.resetRegExp()}},{key:"reset",value:function(){this.options&&this.init(this.options)}},{key:"resetRegExp",value:function(){var e="".concat(this.prefix,"(.+?)").concat(this.suffix);this.regexp=new RegExp(e,"g");var t="".concat(this.prefix).concat(this.unescapePrefix,"(.+?)").concat(this.unescapeSuffix).concat(this.suffix);this.regexpUnescape=new RegExp(t,"g");var n="".concat(this.nestingPrefix,"(.+?)").concat(this.nestingSuffix);this.nestingRegexp=new RegExp(n,"g")}},{key:"interpolate",value:function(e,t,i,o){var r,a,s,u=this,l=this.options&&this.options.interpolation&&this.options.interpolation.defaultVariables||{};function c(e){return e.replace(/\$/g,"$$$$")}var p=function(e){if(e.indexOf(u.formatSeparator)<0){var r=b(t,l,e);return u.alwaysFormat?u.format(r,void 0,i,n({},o,t,{interpolationkey:e})):r}var a=e.split(u.formatSeparator),s=a.shift().trim(),c=a.join(u.formatSeparator).trim();return u.format(b(t,l,s),c,i,n({},o,t,{interpolationkey:s}))};this.resetRegExp();var g=o&&o.missingInterpolationHandler||this.options.missingInterpolationHandler,f=o&&o.interpolation&&o.interpolation.skipOnVariables||this.options.interpolation.skipOnVariables;return[{regex:this.regexpUnescape,safeValue:function(e){return c(e)}},{regex:this.regexp,safeValue:function(e){return u.escapeValue?c(u.escape(e)):c(e)}}].forEach(function(t){for(s=0;r=t.regex.exec(e);){if(void 0===(a=p(r[1].trim())))if("function"==typeof g){var n=g(e,r,o);a="string"==typeof n?n:""}else{if(f){a=r[0];continue}u.logger.warn("missed to pass in variable ".concat(r[1]," for interpolating ").concat(e)),a=""}else"string"==typeof a||u.useRawValueToEscape||(a=d(a));var i=t.safeValue(a);if(e=e.replace(r[0],i),f?(t.regex.lastIndex+=i.length,t.regex.lastIndex-=r[0].length):t.regex.lastIndex=0,++s>=u.maxReplaces)break}}),e}},{key:"nest",value:function(e,t){var i,o,r=this,a=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{},s=n({},a);function u(e,t){var i=this.nestingOptionsSeparator;if(e.indexOf(i)<0)return e;var o=e.split(new RegExp("".concat(i,"[ ]*{"))),r="{".concat(o[1]);e=o[0],r=(r=this.interpolate(r,s)).replace(/'/g,'"');try{s=JSON.parse(r),t&&(s=n({},t,s))}catch(t){return this.logger.warn("failed parsing options string in nesting for key ".concat(e),t),"".concat(e).concat(i).concat(r)}return delete s.defaultValue,e}for(s.applyPostProcessor=!1,delete s.defaultValue;i=this.nestingRegexp.exec(e);){var l=[],c=!1;if(-1!==i[0].indexOf(this.formatSeparator)&&!/{.*}/.test(i[1])){var p=i[1].split(this.formatSeparator).map(function(e){return e.trim()});i[1]=p.shift(),l=p,c=!0}if((o=t(u.call(this,i[1].trim(),s),s))&&i[0]===e&&"string"!=typeof o)return o;"string"!=typeof o&&(o=d(o)),o||(this.logger.warn("missed to resolve ".concat(i[1]," for nesting ").concat(e)),o=""),c&&(o=l.reduce(function(e,t){return r.format(e,t,a.lng,n({},a,{interpolationkey:i[1].trim()}))},o.trim())),e=e.replace(i[0],o),this.regexp.lastIndex=0}return e}}]),e}();var T=function(e){function t(e,n,o){var r,l=arguments.length>3&&void 0!==arguments[3]?arguments[3]:{};return i(this,t),r=s(this,u(t).call(this)),w&&f.call(a(r)),r.backend=e,r.store=n,r.services=o,r.languageUtils=o.languageUtils,r.options=l,r.logger=g.create("backendConnector"),r.state={},r.queue=[],r.backend&&r.backend.init&&r.backend.init(o,l.backend,l),r}return c(t,f),r(t,[{key:"queueLoad",value:function(e,t,n,i){var o=this,r=[],a=[],s=[],u=[];return e.forEach(function(e){var i=!0;t.forEach(function(t){var s="".concat(e,"|").concat(t);!n.reload&&o.store.hasResourceBundle(e,t)?o.state[s]=2:o.state[s]<0||(1===o.state[s]?a.indexOf(s)<0&&a.push(s):(o.state[s]=1,i=!1,a.indexOf(s)<0&&a.push(s),r.indexOf(s)<0&&r.push(s),u.indexOf(t)<0&&u.push(t)))}),i||s.push(e)}),(r.length||a.length)&&this.queue.push({pending:a,loaded:{},errors:[],callback:i}),{toLoad:r,pending:a,toLoadLanguages:s,toLoadNamespaces:u}}},{key:"loaded",value:function(e,t,n){var i=e.split("|"),o=i[0],r=i[1];t&&this.emit("failedLoading",o,r,t),n&&this.store.addResourceBundle(o,r,n),this.state[e]=t?-1:2;var a={};this.queue.forEach(function(n){var i,s,u,l,c,p;i=n.loaded,s=r,l=v(i,[o],Object),c=l.obj,p=l.k,c[p]=c[p]||[],u&&(c[p]=c[p].concat(s)),u||c[p].push(s),function(e,t){for(var n=e.indexOf(t);-1!==n;)e.splice(n,1),n=e.indexOf(t)}(n.pending,e),t&&n.errors.push(t),0!==n.pending.length||n.done||(Object.keys(n.loaded).forEach(function(e){a[e]||(a[e]=[]),n.loaded[e].length&&n.loaded[e].forEach(function(t){a[e].indexOf(t)<0&&a[e].push(t)})}),n.done=!0,n.errors.length?n.callback(n.errors):n.callback())}),this.emit("loaded",a),this.queue=this.queue.filter(function(e){return!e.done})}},{key:"read",value:function(e,t,n){var i=this,o=arguments.length>3&&void 0!==arguments[3]?arguments[3]:0,r=arguments.length>4&&void 0!==arguments[4]?arguments[4]:350,a=arguments.length>5?arguments[5]:void 0;return e.length?this.backend[n](e,t,function(s,u){s&&u&&o<5?setTimeout(function(){i.read.call(i,e,t,n,o+1,2*r,a)},r):a(s,u)}):a(null,{})}},{key:"prepareLoading",value:function(e,t){var n=this,i=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{},o=arguments.length>3?arguments[3]:void 0;if(!this.backend)return this.logger.warn("No backend was added via i18next.use. Will not load resources."),o&&o();"string"==typeof e&&(e=this.languageUtils.toResolveHierarchy(e)),"string"==typeof t&&(t=[t]);var r=this.queueLoad(e,t,i,o);if(!r.toLoad.length)return r.pending.length||o(),null;r.toLoad.forEach(function(e){n.loadOne(e)})}},{key:"load",value:function(e,t,n){this.prepareLoading(e,t,{},n)}},{key:"reload",value:function(e,t,n){this.prepareLoading(e,t,{reload:!0},n)}},{key:"loadOne",value:function(e){var t=this,n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"",i=e.split("|"),o=i[0],r=i[1];this.read(o,r,"read",void 0,void 0,function(i,a){i&&t.logger.warn("".concat(n,"loading namespace ").concat(r," for language ").concat(o," failed"),i),!i&&a&&t.logger.log("".concat(n,"loaded namespace ").concat(r," for language ").concat(o),a),t.loaded(e,i,a)})}},{key:"saveMissing",value:function(e,t,i,o,r){var a=arguments.length>5&&void 0!==arguments[5]?arguments[5]:{};this.services.utils&&this.services.utils.hasLoadedNamespace&&!this.services.utils.hasLoadedNamespace(t)?this.logger.warn('did not save key "'.concat(i,'" as the namespace "').concat(t,'" was not yet loaded'),"This means something IS WRONG in your setup. You access the t function before i18next.init / i18next.loadNamespace / i18next.changeLanguage was done. Wait for the callback or Promise to resolve before accessing it!!!"):null!=i&&""!==i&&(this.backend&&this.backend.create&&this.backend.create(e,t,i,o,null,n({},a,{isUpdate:r})),e&&e[0]&&this.store.addResource(e[0],t,i,o))}}]),t}();function A(e){return"string"==typeof e.ns&&(e.ns=[e.ns]),"string"==typeof e.fallbackLng&&(e.fallbackLng=[e.fallbackLng]),"string"==typeof e.fallbackNS&&(e.fallbackNS=[e.fallbackNS]),e.whitelist&&(e.whitelist&&e.whitelist.indexOf("cimode")<0&&(e.whitelist=e.whitelist.concat(["cimode"])),e.supportedLngs=e.whitelist),e.nonExplicitWhitelist&&(e.nonExplicitSupportedLngs=e.nonExplicitWhitelist),e.supportedLngs&&e.supportedLngs.indexOf("cimode")<0&&(e.supportedLngs=e.supportedLngs.concat(["cimode"])),e}function U(){}return new(function(t){function o(){var e,t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},n=arguments.length>1?arguments[1]:void 0;if(i(this,o),e=s(this,u(o).call(this)),w&&f.call(a(e)),e.options=A(t),e.services={},e.logger=g,e.modules={external:[]},n&&!e.isInitialized&&!t.isClone){if(!e.options.initImmediate)return e.init(t,n),s(e,a(e));setTimeout(function(){e.init(t,n)},0)}return e}return c(o,f),r(o,[{key:"init",value:function(){var t=this,i=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},o=arguments.length>1?arguments[1]:void 0;function r(e){return e?"function"==typeof e?new e:e:null}if("function"==typeof i&&(o=i,i={}),i.whitelist&&!i.supportedLngs&&this.logger.deprecate("whitelist",'option "whitelist" will be renamed to "supportedLngs" in the next major - please make sure to rename this option asap.'),i.nonExplicitWhitelist&&!i.nonExplicitSupportedLngs&&this.logger.deprecate("whitelist",'options "nonExplicitWhitelist" will be renamed to "nonExplicitSupportedLngs" in the next major - please make sure to rename this option asap.'),this.options=n({},{debug:!1,initImmediate:!0,ns:["translation"],defaultNS:["translation"],fallbackLng:["dev"],fallbackNS:!1,whitelist:!1,nonExplicitWhitelist:!1,supportedLngs:!1,nonExplicitSupportedLngs:!1,load:"all",preload:!1,simplifyPluralSuffix:!0,keySeparator:".",nsSeparator:":",pluralSeparator:"_",contextSeparator:"_",partialBundledLanguages:!1,saveMissing:!1,updateMissing:!1,saveMissingTo:"fallback",saveMissingPlurals:!0,missingKeyHandler:!1,missingInterpolationHandler:!1,postProcess:!1,postProcessPassResolved:!1,returnNull:!0,returnEmptyString:!0,returnObjects:!1,joinArrays:!1,returnedObjectHandler:!1,parseMissingKeyHandler:!1,appendNamespaceToMissingKey:!1,appendNamespaceToCIMode:!1,overloadTranslationOptionHandler:function(t){var n={};if("object"===e(t[1])&&(n=t[1]),"string"==typeof t[1]&&(n.defaultValue=t[1]),"string"==typeof t[2]&&(n.tDescription=t[2]),"object"===e(t[2])||"object"===e(t[3])){var i=t[3]||t[2];Object.keys(i).forEach(function(e){n[e]=i[e]})}return n},interpolation:{escapeValue:!0,format:function(e,t,n,i){return e},prefix:"{{",suffix:"}}",formatSeparator:",",unescapePrefix:"-",nestingPrefix:"$t(",nestingSuffix:")",nestingOptionsSeparator:",",maxReplaces:1e3,skipOnVariables:!1}},this.options,A(i)),this.format=this.options.interpolation.format,o||(o=U),!this.options.isClone){this.modules.logger?g.init(r(this.modules.logger),this.options):g.init(null,this.options);var a=new j(this.options);this.store=new L(this.options.resources,this.options);var s=this.services;s.logger=g,s.resourceStore=this.store,s.languageUtils=a,s.pluralResolver=new F(a,{prepend:this.options.pluralSeparator,compatibilityJSON:this.options.compatibilityJSON,simplifyPluralSuffix:this.options.simplifyPluralSuffix}),s.interpolator=new V(this.options),s.utils={hasLoadedNamespace:this.hasLoadedNamespace.bind(this)},s.backendConnector=new T(r(this.modules.backend),s.resourceStore,s,this.options),s.backendConnector.on("*",function(e){for(var n=arguments.length,i=new Array(n>1?n-1:0),o=1;o<n;o++)i[o-1]=arguments[o];t.emit.apply(t,[e].concat(i))}),this.modules.languageDetector&&(s.languageDetector=r(this.modules.languageDetector),s.languageDetector.init(s,this.options.detection,this.options)),this.modules.i18nFormat&&(s.i18nFormat=r(this.modules.i18nFormat),s.i18nFormat.init&&s.i18nFormat.init(this)),this.translator=new R(this.services,this.options),this.translator.on("*",function(e){for(var n=arguments.length,i=new Array(n>1?n-1:0),o=1;o<n;o++)i[o-1]=arguments[o];t.emit.apply(t,[e].concat(i))}),this.modules.external.forEach(function(e){e.init&&e.init(t)})}if(this.options.fallbackLng&&!this.services.languageDetector&&!this.options.lng){var u=this.services.languageUtils.getFallbackCodes(this.options.fallbackLng);u.length>0&&"dev"!==u[0]&&(this.options.lng=u[0])}this.services.languageDetector||this.options.lng||this.logger.warn("init: no languageDetector is used and no lng is defined");["getResource","hasResourceBundle","getResourceBundle","getDataByLanguage"].forEach(function(e){t[e]=function(){var n;return(n=t.store)[e].apply(n,arguments)}});["addResource","addResources","addResourceBundle","removeResourceBundle"].forEach(function(e){t[e]=function(){var n;return(n=t.store)[e].apply(n,arguments),t}});var l=h(),c=function(){var e=function(e,n){t.isInitialized&&t.logger.warn("init: i18next is already initialized. You should call init just once!"),t.isInitialized=!0,t.options.isClone||t.logger.log("initialized",t.options),t.emit("initialized",t.options),l.resolve(n),o(e,n)};if(t.languages&&"v1"!==t.options.compatibilityAPI&&!t.isInitialized)return e(null,t.t.bind(t));t.changeLanguage(t.options.lng,e)};return this.options.resources||!this.options.initImmediate?c():setTimeout(c,0),l}},{key:"loadResources",value:function(e){var t=this,n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:U,i="string"==typeof e?e:this.language;if("function"==typeof e&&(n=e),!this.options.resources||this.options.partialBundledLanguages){if(i&&"cimode"===i.toLowerCase())return n();var o=[],r=function(e){e&&t.services.languageUtils.toResolveHierarchy(e).forEach(function(e){o.indexOf(e)<0&&o.push(e)})};if(i)r(i);else this.services.languageUtils.getFallbackCodes(this.options.fallbackLng).forEach(function(e){return r(e)});this.options.preload&&this.options.preload.forEach(function(e){return r(e)}),this.services.backendConnector.load(o,this.options.ns,n)}else n(null)}},{key:"reloadResources",value:function(e,t,n){var i=h();return e||(e=this.languages),t||(t=this.options.ns),n||(n=U),this.services.backendConnector.reload(e,t,function(e){i.resolve(),n(e)}),i}},{key:"use",value:function(e){if(!e)throw new Error("You are passing an undefined module! Please check the object you are passing to i18next.use()");if(!e.type)throw new Error("You are passing a wrong module! Please check the object you are passing to i18next.use()");return"backend"===e.type&&(this.modules.backend=e),("logger"===e.type||e.log&&e.warn&&e.error)&&(this.modules.logger=e),"languageDetector"===e.type&&(this.modules.languageDetector=e),"i18nFormat"===e.type&&(this.modules.i18nFormat=e),"postProcessor"===e.type&&O.addPostProcessor(e),"3rdParty"===e.type&&this.modules.external.push(e),this}},{key:"changeLanguage",value:function(e,t){var n=this;this.isLanguageChangingTo=e;var i=h();this.emit("languageChanging",e);var o=function(e){var o="string"==typeof e?e:n.services.languageUtils.getBestMatchFromCodes(e);o&&(n.language||(n.language=o,n.languages=n.services.languageUtils.toResolveHierarchy(o)),n.translator.language||n.translator.changeLanguage(o),n.services.languageDetector&&n.services.languageDetector.cacheUserLanguage(o)),n.loadResources(o,function(e){!function(e,o){o?(n.language=o,n.languages=n.services.languageUtils.toResolveHierarchy(o),n.translator.changeLanguage(o),n.isLanguageChangingTo=void 0,n.emit("languageChanged",o),n.logger.log("languageChanged",o)):n.isLanguageChangingTo=void 0,i.resolve(function(){return n.t.apply(n,arguments)}),t&&t(e,function(){return n.t.apply(n,arguments)})}(e,o)})};return e||!this.services.languageDetector||this.services.languageDetector.async?!e&&this.services.languageDetector&&this.services.languageDetector.async?this.services.languageDetector.detect(o):o(e):o(this.services.languageDetector.detect()),i}},{key:"getFixedT",value:function(t,i){var o=this,r=function t(i,r){var a;if("object"!==e(r)){for(var s=arguments.length,u=new Array(s>2?s-2:0),l=2;l<s;l++)u[l-2]=arguments[l];a=o.options.overloadTranslationOptionHandler([i,r].concat(u))}else a=n({},r);return a.lng=a.lng||t.lng,a.lngs=a.lngs||t.lngs,a.ns=a.ns||t.ns,o.t(i,a)};return"string"==typeof t?r.lng=t:r.lngs=t,r.ns=i,r}},{key:"t",value:function(){var e;return this.translator&&(e=this.translator).translate.apply(e,arguments)}},{key:"exists",value:function(){var e;return this.translator&&(e=this.translator).exists.apply(e,arguments)}},{key:"setDefaultNamespace",value:function(e){this.options.defaultNS=e}},{key:"hasLoadedNamespace",value:function(e){var t=this,n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};if(!this.isInitialized)return this.logger.warn("hasLoadedNamespace: i18next was not initialized",this.languages),!1;if(!this.languages||!this.languages.length)return this.logger.warn("hasLoadedNamespace: i18n.languages were undefined or empty",this.languages),!1;var i=this.languages[0],o=!!this.options&&this.options.fallbackLng,r=this.languages[this.languages.length-1];if("cimode"===i.toLowerCase())return!0;var a=function(e,n){var i=t.services.backendConnector.state["".concat(e,"|").concat(n)];return-1===i||2===i};if(n.precheck){var s=n.precheck(this,a);if(void 0!==s)return s}return!!this.hasResourceBundle(i,e)||(!this.services.backendConnector.backend||!(!a(i,e)||o&&!a(r,e)))}},{key:"loadNamespaces",value:function(e,t){var n=this,i=h();return this.options.ns?("string"==typeof e&&(e=[e]),e.forEach(function(e){n.options.ns.indexOf(e)<0&&n.options.ns.push(e)}),this.loadResources(function(e){i.resolve(),t&&t(e)}),i):(t&&t(),Promise.resolve())}},{key:"loadLanguages",value:function(e,t){var n=h();"string"==typeof e&&(e=[e]);var i=this.options.preload||[],o=e.filter(function(e){return i.indexOf(e)<0});return o.length?(this.options.preload=i.concat(o),this.loadResources(function(e){n.resolve(),t&&t(e)}),n):(t&&t(),Promise.resolve())}},{key:"dir",value:function(e){if(e||(e=this.languages&&this.languages.length>0?this.languages[0]:this.language),!e)return"rtl";return["ar","shu","sqr","ssh","xaa","yhd","yud","aao","abh","abv","acm","acq","acw","acx","acy","adf","ads","aeb","aec","afb","ajp","apc","apd","arb","arq","ars","ary","arz","auz","avl","ayh","ayl","ayn","ayp","bbz","pga","he","iw","ps","pbt","pbu","pst","prp","prd","ug","ur","ydd","yds","yih","ji","yi","hbo","men","xmn","fa","jpr","peo","pes","prs","dv","sam"].indexOf(this.services.languageUtils.getLanguagePartFromCode(e))>=0?"rtl":"ltr"}},{key:"createInstance",value:function(){return new o(arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},arguments.length>1?arguments[1]:void 0)}},{key:"cloneInstance",value:function(){var e=this,t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},i=arguments.length>1&&void 0!==arguments[1]?arguments[1]:U,r=n({},this.options,t,{isClone:!0}),a=new o(r);return["store","services","language"].forEach(function(t){a[t]=e[t]}),a.services=n({},this.services),a.services.utils={hasLoadedNamespace:a.hasLoadedNamespace.bind(a)},a.translator=new R(a.services,a.options),a.translator.on("*",function(e){for(var t=arguments.length,n=new Array(t>1?t-1:0),i=1;i<t;i++)n[i-1]=arguments[i];a.emit.apply(a,[e].concat(n))}),a.init(r,i),a.translator.options=a.options,a.translator.backendConnector.services.utils={hasLoadedNamespace:a.hasLoadedNamespace.bind(a)},a}}]),o}())});
\ No newline at end of file
diff --git a/activities/PhysicsJS.activity/lib/l10n.js b/activities/PhysicsJS.activity/lib/l10n.js
new file mode 100644
index 000000000..661fb9466
--- /dev/null
+++ b/activities/PhysicsJS.activity/lib/l10n.js
@@ -0,0 +1,55 @@
+define(['i18next.min', 'axios.min'], function (i18next, axios) {
+    const l10n = {language: {direction: "ltr"}};
+
+    l10n.init = async (lang) => {
+        await i18next.init({
+            lng: lang,
+            fallbackLng: "en",
+            resources: {}
+        }).then(() => {
+            l10n.language.direction = i18next.dir();
+            l10n.switchTo(lang);
+        });
+    };
+
+    l10n.get = (key, parameter) => {
+        return i18next.t(key, parameter);
+    };
+
+    l10n.loadLanguageResource = (lang) => {
+        return new Promise((resolve, reject) => {
+            axios.get("./locales/" + lang + ".json").then((response) => {
+                resolve(response.data);
+            }).catch((error) => {
+                console.log("Failed to load " + lang + " language: " + error);
+                resolve(null); // Resolve with null to indicate failure
+            });
+        });
+    };
+
+    l10n.switchTo = (lang) => {
+        if (!i18next.hasResourceBundle(lang, "translation")) {
+            console.log("Loading " + lang + " language");
+            l10n.loadLanguageResource(lang).then((locales) => {
+                if (locales !== null) {
+                    i18next.addResourceBundle(lang, "translation", locales);
+                    i18next.changeLanguage(lang);
+                    triggerLocalizedEvent();
+                } else {
+                    l10n.init("en");
+                }
+            });
+        } else {
+            i18next.changeLanguage(lang);
+            triggerLocalizedEvent();
+        }
+    };
+
+
+    function triggerLocalizedEvent() {
+        const event = new Event("localized");
+        window.dispatchEvent(event);
+    };
+
+    return l10n;
+});
\ No newline at end of file
diff --git a/activities/PhysicsJS.activity/lib/sugar-web/activity/activity.js b/activities/PhysicsJS.activity/lib/sugar-web/activity/activity.js
index c3524b432..2fa8f23de 100644
--- a/activities/PhysicsJS.activity/lib/sugar-web/activity/activity.js
+++ b/activities/PhysicsJS.activity/lib/sugar-web/activity/activity.js
@@ -1,12 +1,11 @@
-define(["webL10n",
-        "sugar-web/activity/shortcut",
+define(["sugar-web/activity/shortcut",
         "sugar-web/bus",
         "sugar-web/env",
         "sugar-web/datastore",
 		"sugar-web/presence",
         "sugar-web/graphics/icon",
         "sugar-web/graphics/activitypalette"], function (
-    l10n, shortcut, bus, env, datastore, presence, icon, activitypalette) {
+    shortcut, bus, env, datastore, presence, icon, activitypalette) {
 
     'use strict';
 
@@ -22,7 +21,6 @@ define(["webL10n",
     activity.setup = function () {
         bus.listen();
 
-        l10n.start();
 
         function sendPauseEvent() {
 			var pauseEvent = document.createEvent("CustomEvent");
diff --git a/activities/PhysicsJS.activity/lib/sugar-web/package.json b/activities/PhysicsJS.activity/lib/sugar-web/package.json
index f2e3555b2..0c2dec139 100644
--- a/activities/PhysicsJS.activity/lib/sugar-web/package.json
+++ b/activities/PhysicsJS.activity/lib/sugar-web/package.json
@@ -2,7 +2,6 @@
   "volo": {
     "baseUrl": "lib",
     "dependencies": {
-      "webL10n": "github:sugarlabs/webL10n",
       "mustache": "github:janl/mustache.js/0.7.2",
       "text": "github:requirejs/text"
     }
diff --git a/activities/PhysicsJS.activity/lib/sugar-web/test/loader.js b/activities/PhysicsJS.activity/lib/sugar-web/test/loader.js
index aec983753..7c83cc931 100644
--- a/activities/PhysicsJS.activity/lib/sugar-web/test/loader.js
+++ b/activities/PhysicsJS.activity/lib/sugar-web/test/loader.js
@@ -9,8 +9,7 @@ requirejs.config({
     paths: {
         "sugar-web": ".",
         "mustache": "lib/mustache",
-        "text": "lib/text",
-        "webL10n": "lib/webL10n"
+        "text": "lib/text"
     },
 
     // ask Require.js to load these files (all our tests)
diff --git a/activities/PhysicsJS.activity/lib/tutorial.js b/activities/PhysicsJS.activity/lib/tutorial.js
index 5fc982225..a245da34b 100644
--- a/activities/PhysicsJS.activity/lib/tutorial.js
+++ b/activities/PhysicsJS.activity/lib/tutorial.js
@@ -1,4 +1,4 @@
-define(["webL10n"], function (l10n) {
+define(["l10n"], function (l10n) {
 	var tutorial = {};
 
 	tutorial.start = function() {
diff --git a/activities/PhysicsJS.activity/lib/webL10n.js b/activities/PhysicsJS.activity/lib/webL10n.js
deleted file mode 100644
index f76d66a5e..000000000
--- a/activities/PhysicsJS.activity/lib/webL10n.js
+++ /dev/null
@@ -1,1029 +0,0 @@
-/**
- * Copyright (c) 2011-2013 Fabien Cazenave, Mozilla.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to
- * deal in the Software without restriction, including without limitation the
- * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
- * sell copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-/*jshint browser: true, devel: true, es5: true, globalstrict: true */
-'use strict';
-
-define(function (require) {
-  var gL10nData = {};
-  var gTextData = '';
-  var gTextProp = 'textContent';
-  var gLanguage = '';
-  var gMacros = {};
-  var gReadyState = 'loading';
-
-  /**
-   * Synchronously loading l10n resources significantly minimizes flickering
-   * from displaying the app with non-localized strings and then updating the
-   * strings. Although this will block all script execution on this page, we
-   * expect that the l10n resources are available locally on flash-storage.
-   *
-   * As synchronous XHR is generally considered as a bad idea, we're still
-   * loading l10n resources asynchronously -- but we keep this in a setting,
-   * just in case... and applications using this library should hide their
-   * content until the `localized' event happens.
-   */
-
-  var gAsyncResourceLoading = true; // read-only
-
-
-  /**
-   * Debug helpers
-   *
-   *   gDEBUG == 0: don't display any console message
-   *   gDEBUG == 1: display only warnings, not logs
-   *   gDEBUG == 2: display all console messages
-   */
-
-  var gDEBUG = 1;
-
-  function consoleLog(message) {
-    if (gDEBUG >= 2) {
-      console.log('[l10n] ' + message);
-    }
-  };
-
-  function consoleWarn(message) {
-    if (gDEBUG) {
-      console.warn('[l10n] ' + message);
-    }
-  };
-
-
-  /**
-   * DOM helpers for the so-called "HTML API".
-   *
-   * These functions are written for modern browsers. For old versions of IE,
-   * they're overridden in the 'startup' section at the end of this file.
-   */
-
-  function getL10nResourceLinks() {
-    return document.querySelectorAll('link[type="application/l10n"]');
-  }
-
-  function getL10nDictionary() {
-    var script = document.querySelector('script[type="application/l10n"]');
-    // TODO: support multiple and external JSON dictionaries
-    return script ? JSON.parse(script.innerHTML) : null;
-  }
-
-  function getTranslatableChildren(element) {
-    return element ? element.querySelectorAll('*[data-l10n-id]') : [];
-  }
-
-  function getL10nAttributes(element) {
-    if (!element)
-      return {};
-
-    var l10nId = element.getAttribute('data-l10n-id');
-    var l10nArgs = element.getAttribute('data-l10n-args');
-    var args = {};
-    if (l10nArgs) {
-      try {
-        args = JSON.parse(l10nArgs);
-      } catch (e) {
-        consoleWarn('could not parse arguments for #' + l10nId);
-      }
-    }
-    return { id: l10nId, args: args };
-  }
-
-  function fireL10nReadyEvent(lang) {
-    var evtObject = document.createEvent('Event');
-    evtObject.initEvent('localized', true, false);
-    evtObject.language = lang;
-    document.dispatchEvent(evtObject);
-  }
-
-  function xhrLoadText(url, onSuccess, onFailure, asynchronous) {
-    onSuccess = onSuccess || function _onSuccess(data) {};
-    onFailure = onFailure || function _onFailure() {
-      consoleWarn(url + ' not found.');
-    };
-
-    var xhr = new XMLHttpRequest();
-    xhr.open('GET', url, asynchronous);
-    if (xhr.overrideMimeType) {
-      xhr.overrideMimeType('text/plain; charset=utf-8');
-    }
-    xhr.onreadystatechange = function() {
-      if (xhr.readyState == 4) {
-        if (xhr.status == 200 || xhr.status === 0) {
-          onSuccess(xhr.responseText);
-        } else {
-          onFailure();
-        }
-      }
-    };
-    xhr.onerror = onFailure;
-    xhr.ontimeout = onFailure;
-
-    // in Firefox OS with the app:// protocol, trying to XHR a non-existing
-    // URL will raise an exception here -- hence this ugly try...catch.
-    try {
-      xhr.send(null);
-    } catch (e) {
-      onFailure();
-    }
-  }
-
-
-  /**
-   * l10n resource parser:
-   *  - reads (async XHR) the l10n resource matching `lang';
-   *  - imports linked resources (synchronously) when specified;
-   *  - parses the text data (fills `gL10nData' and `gTextData');
-   *  - triggers success/failure callbacks when done.
-   *
-   * @param {string} href
-   *    URL of the l10n resource to parse.
-   *
-   * @param {string} lang
-   *    locale (language) to parse.
-   *
-   * @param {Function} successCallback
-   *    triggered when the l10n resource has been successully parsed.
-   *
-   * @param {Function} failureCallback
-   *    triggered when the an error has occured.
-   *
-   * @return {void}
-   *    uses the following global variables: gL10nData, gTextData, gTextProp.
-   */
-
-  function parseResource(href, lang, successCallback, failureCallback) {
-    var baseURL = href.replace(/[^\/]*$/, '') || './';
-
-    // handle escaped characters (backslashes) in a string
-    function evalString(text) {
-      if (text.lastIndexOf('\\') < 0)
-        return text;
-      return text.replace(/\\\\/g, '\\')
-                 .replace(/\\n/g, '\n')
-                 .replace(/\\r/g, '\r')
-                 .replace(/\\t/g, '\t')
-                 .replace(/\\b/g, '\b')
-                 .replace(/\\f/g, '\f')
-                 .replace(/\\{/g, '{')
-                 .replace(/\\}/g, '}')
-                 .replace(/\\"/g, '"')
-                 .replace(/\\'/g, "'");
-    }
-
-    // parse *.properties text data into an l10n dictionary
-    function parseProperties(text) {
-      var dictionary = [];
-
-      // token expressions
-      var reBlank = /^\s*|\s*$/;
-      var reComment = /^\s*#|^\s*$/;
-      var reSection = /^\s*\[(.*)\]\s*$/;
-      var reImport = /^\s*@import\s+url\((.*)\)\s*$/i;
-      var reSplit = /^([^=\s]*)\s*=\s*(.+)$/; // TODO: escape EOLs with '\'
-
-      // parse the *.properties file into an associative array
-      function parseRawLines(rawText, extendedSyntax) {
-        var entries = rawText.replace(reBlank, '').split(/[\r\n]+/);
-        var currentLang = '*';
-        var genericLang = lang.replace(/-[a-z]+$/i, '');
-        var skipLang = false;
-        var match = '';
-
-        for (var i = 0; i < entries.length; i++) {
-          var line = entries[i];
-
-          // comment or blank line?
-          if (reComment.test(line))
-            continue;
-
-          // the extended syntax supports [lang] sections and @import rules
-          if (extendedSyntax) {
-            if (reSection.test(line)) { // section start?
-              match = reSection.exec(line);
-              currentLang = match[1];
-              skipLang = (currentLang !== '*') &&
-                  (currentLang !== lang) && (currentLang !== genericLang);
-              continue;
-            } else if (skipLang) {
-              continue;
-            }
-            if (reImport.test(line)) { // @import rule?
-              match = reImport.exec(line);
-              loadImport(baseURL + match[1]); // load the resource synchronously
-            }
-          }
-
-          // key-value pair
-          var tmp = line.match(reSplit);
-          if (tmp && tmp.length == 3) {
-            dictionary[tmp[1]] = evalString(tmp[2]);
-          }
-        }
-      }
-
-      // import another *.properties file
-      function loadImport(url) {
-        xhrLoadText(url, function(content) {
-          parseRawLines(content, false); // don't allow recursive imports
-        }, null, false); // load synchronously
-      }
-
-      // fill the dictionary
-      parseRawLines(text, true);
-      return dictionary;
-    }
-
-    // load and parse l10n data (warning: global variables are used here)
-    xhrLoadText(href, function(response) {
-      gTextData += response; // mostly for debug
-
-      // parse *.properties text data into an l10n dictionary
-      var data = parseProperties(response);
-
-      // find attribute descriptions, if any
-      for (var key in data) {
-        var id, prop, index = key.lastIndexOf('.');
-        if (index > 0) { // an attribute has been specified
-          id = key.substring(0, index);
-          prop = key.substr(index + 1);
-        } else { // no attribute: assuming text content by default
-          id = key;
-          prop = gTextProp;
-        }
-        if (!gL10nData[id]) {
-          gL10nData[id] = {};
-        }
-        gL10nData[id][prop] = data[key];
-      }
-
-      // trigger callback
-      if (successCallback) {
-        successCallback();
-      }
-    }, failureCallback, gAsyncResourceLoading);
-  };
-
-  // load and parse all resources for the specified locale
-  function loadLocale(lang, callback) {
-    callback = callback || function _callback() {};
-
-    clear();
-    gLanguage = lang;
-
-    // check all <link type="application/l10n" href="..." /> nodes
-    // and load the resource files
-    var langLinks = getL10nResourceLinks();
-    var langCount = langLinks.length;
-    if (langCount == 0) {
-      // we might have a pre-compiled dictionary instead
-      var dict = getL10nDictionary();
-      if (dict && dict.locales && dict.default_locale) {
-        consoleLog('using the embedded JSON directory, early way out');
-        gL10nData = dict.locales[lang] || dict.locales[dict.default_locale];
-        callback();
-      } else {
-        consoleLog('no resource to load, early way out');
-      }
-      // early way out
-      fireL10nReadyEvent(lang);
-      gReadyState = 'complete';
-      return;
-    }
-
-    // start the callback when all resources are loaded
-    var onResourceLoaded = null;
-    var gResourceCount = 0;
-    onResourceLoaded = function() {
-      gResourceCount++;
-      if (gResourceCount >= langCount) {
-        callback();
-        fireL10nReadyEvent(lang);
-        gReadyState = 'complete';
-      }
-    };
-
-    // load all resource files
-    function l10nResourceLink(link) {
-      var href = link.href;
-      var type = link.type;
-      this.load = function(lang, callback) {
-        var applied = lang;
-        parseResource(href, lang, callback, function() {
-          consoleWarn(href + ' not found.');
-          applied = '';
-        });
-        return applied; // return lang if found, an empty string if not found
-      };
-    }
-
-    for (var i = 0; i < langCount; i++) {
-      var resource = new l10nResourceLink(langLinks[i]);
-      var rv = resource.load(lang, onResourceLoaded);
-      if (rv != lang) { // lang not found, used default resource instead
-        consoleWarn('"' + lang + '" resource not found');
-        gLanguage = '';
-      }
-    }
-  }
-
-  // clear all l10n data
-  function clear() {
-    gL10nData = {};
-    gTextData = '';
-    gLanguage = '';
-    // TODO: clear all non predefined macros.
-    // There's no such macro /yet/ but we're planning to have some...
-  }
-
-
-  /**
-   * Get rules for plural forms (shared with JetPack), see:
-   * http://unicode.org/repos/cldr-tmp/trunk/diff/supplemental/language_plural_rules.html
-   * https://github.com/mozilla/addon-sdk/blob/master/python-lib/plural-rules-generator.p
-   *
-   * @param {string} lang
-   *    locale (language) used.
-   *
-   * @return {Function}
-   *    returns a function that gives the plural form name for a given integer:
-   *       var fun = getPluralRules('en');
-   *       fun(1)    -> 'one'
-   *       fun(0)    -> 'other'
-   *       fun(1000) -> 'other'.
-   */
-
-  function getPluralRules(lang) {
-    var locales2rules = {
-      'af': 3,
-      'ak': 4,
-      'am': 4,
-      'ar': 1,
-      'asa': 3,
-      'az': 0,
-      'be': 11,
-      'bem': 3,
-      'bez': 3,
-      'bg': 3,
-      'bh': 4,
-      'bm': 0,
-      'bn': 3,
-      'bo': 0,
-      'br': 20,
-      'brx': 3,
-      'bs': 11,
-      'ca': 3,
-      'cgg': 3,
-      'chr': 3,
-      'cs': 12,
-      'cy': 17,
-      'da': 3,
-      'de': 3,
-      'dv': 3,
-      'dz': 0,
-      'ee': 3,
-      'el': 3,
-      'en': 3,
-      'eo': 3,
-      'es': 3,
-      'et': 3,
-      'eu': 3,
-      'fa': 0,
-      'ff': 5,
-      'fi': 3,
-      'fil': 4,
-      'fo': 3,
-      'fr': 5,
-      'fur': 3,
-      'fy': 3,
-      'ga': 8,
-      'gd': 24,
-      'gl': 3,
-      'gsw': 3,
-      'gu': 3,
-      'guw': 4,
-      'gv': 23,
-      'ha': 3,
-      'haw': 3,
-      'he': 2,
-      'hi': 4,
-      'hr': 11,
-      'hu': 0,
-      'id': 0,
-      'ig': 0,
-      'ii': 0,
-      'is': 3,
-      'it': 3,
-      'iu': 7,
-      'ja': 0,
-      'jmc': 3,
-      'jv': 0,
-      'ka': 0,
-      'kab': 5,
-      'kaj': 3,
-      'kcg': 3,
-      'kde': 0,
-      'kea': 0,
-      'kk': 3,
-      'kl': 3,
-      'km': 0,
-      'kn': 0,
-      'ko': 0,
-      'ksb': 3,
-      'ksh': 21,
-      'ku': 3,
-      'kw': 7,
-      'lag': 18,
-      'lb': 3,
-      'lg': 3,
-      'ln': 4,
-      'lo': 0,
-      'lt': 10,
-      'lv': 6,
-      'mas': 3,
-      'mg': 4,
-      'mk': 16,
-      'ml': 3,
-      'mn': 3,
-      'mo': 9,
-      'mr': 3,
-      'ms': 0,
-      'mt': 15,
-      'my': 0,
-      'nah': 3,
-      'naq': 7,
-      'nb': 3,
-      'nd': 3,
-      'ne': 3,
-      'nl': 3,
-      'nn': 3,
-      'no': 3,
-      'nr': 3,
-      'nso': 4,
-      'ny': 3,
-      'nyn': 3,
-      'om': 3,
-      'or': 3,
-      'pa': 3,
-      'pap': 3,
-      'pl': 13,
-      'ps': 3,
-      'pt': 3,
-      'rm': 3,
-      'ro': 9,
-      'rof': 3,
-      'ru': 11,
-      'rwk': 3,
-      'sah': 0,
-      'saq': 3,
-      'se': 7,
-      'seh': 3,
-      'ses': 0,
-      'sg': 0,
-      'sh': 11,
-      'shi': 19,
-      'sk': 12,
-      'sl': 14,
-      'sma': 7,
-      'smi': 7,
-      'smj': 7,
-      'smn': 7,
-      'sms': 7,
-      'sn': 3,
-      'so': 3,
-      'sq': 3,
-      'sr': 11,
-      'ss': 3,
-      'ssy': 3,
-      'st': 3,
-      'sv': 3,
-      'sw': 3,
-      'syr': 3,
-      'ta': 3,
-      'te': 3,
-      'teo': 3,
-      'th': 0,
-      'ti': 4,
-      'tig': 3,
-      'tk': 3,
-      'tl': 4,
-      'tn': 3,
-      'to': 0,
-      'tr': 0,
-      'ts': 3,
-      'tzm': 22,
-      'uk': 11,
-      'ur': 3,
-      've': 3,
-      'vi': 0,
-      'vun': 3,
-      'wa': 4,
-      'wae': 3,
-      'wo': 0,
-      'xh': 3,
-      'xog': 3,
-      'yo': 0,
-      'zh': 0,
-      'zu': 3
-    };
-
-    // utility functions for plural rules methods
-    function isIn(n, list) {
-      return list.indexOf(n) !== -1;
-    }
-    function isBetween(n, start, end) {
-      return start <= n && n <= end;
-    }
-
-    // list of all plural rules methods:
-    // map an integer to the plural form name to use
-    var pluralRules = {
-      '0': function(n) {
-        return 'other';
-      },
-      '1': function(n) {
-        if ((isBetween((n % 100), 3, 10)))
-          return 'few';
-        if (n === 0)
-          return 'zero';
-        if ((isBetween((n % 100), 11, 99)))
-          return 'many';
-        if (n == 2)
-          return 'two';
-        if (n == 1)
-          return 'one';
-        return 'other';
-      },
-      '2': function(n) {
-        if (n !== 0 && (n % 10) === 0)
-          return 'many';
-        if (n == 2)
-          return 'two';
-        if (n == 1)
-          return 'one';
-        return 'other';
-      },
-      '3': function(n) {
-        if (n == 1)
-          return 'one';
-        return 'other';
-      },
-      '4': function(n) {
-        if ((isBetween(n, 0, 1)))
-          return 'one';
-        return 'other';
-      },
-      '5': function(n) {
-        if ((isBetween(n, 0, 2)) && n != 2)
-          return 'one';
-        return 'other';
-      },
-      '6': function(n) {
-        if (n === 0)
-          return 'zero';
-        if ((n % 10) == 1 && (n % 100) != 11)
-          return 'one';
-        return 'other';
-      },
-      '7': function(n) {
-        if (n == 2)
-          return 'two';
-        if (n == 1)
-          return 'one';
-        return 'other';
-      },
-      '8': function(n) {
-        if ((isBetween(n, 3, 6)))
-          return 'few';
-        if ((isBetween(n, 7, 10)))
-          return 'many';
-        if (n == 2)
-          return 'two';
-        if (n == 1)
-          return 'one';
-        return 'other';
-      },
-      '9': function(n) {
-        if (n === 0 || n != 1 && (isBetween((n % 100), 1, 19)))
-          return 'few';
-        if (n == 1)
-          return 'one';
-        return 'other';
-      },
-      '10': function(n) {
-        if ((isBetween((n % 10), 2, 9)) && !(isBetween((n % 100), 11, 19)))
-          return 'few';
-        if ((n % 10) == 1 && !(isBetween((n % 100), 11, 19)))
-          return 'one';
-        return 'other';
-      },
-      '11': function(n) {
-        if ((isBetween((n % 10), 2, 4)) && !(isBetween((n % 100), 12, 14)))
-          return 'few';
-        if ((n % 10) === 0 ||
-            (isBetween((n % 10), 5, 9)) ||
-            (isBetween((n % 100), 11, 14)))
-          return 'many';
-        if ((n % 10) == 1 && (n % 100) != 11)
-          return 'one';
-        return 'other';
-      },
-      '12': function(n) {
-        if ((isBetween(n, 2, 4)))
-          return 'few';
-        if (n == 1)
-          return 'one';
-        return 'other';
-      },
-      '13': function(n) {
-        if ((isBetween((n % 10), 2, 4)) && !(isBetween((n % 100), 12, 14)))
-          return 'few';
-        if (n != 1 && (isBetween((n % 10), 0, 1)) ||
-            (isBetween((n % 10), 5, 9)) ||
-            (isBetween((n % 100), 12, 14)))
-          return 'many';
-        if (n == 1)
-          return 'one';
-        return 'other';
-      },
-      '14': function(n) {
-        if ((isBetween((n % 100), 3, 4)))
-          return 'few';
-        if ((n % 100) == 2)
-          return 'two';
-        if ((n % 100) == 1)
-          return 'one';
-        return 'other';
-      },
-      '15': function(n) {
-        if (n === 0 || (isBetween((n % 100), 2, 10)))
-          return 'few';
-        if ((isBetween((n % 100), 11, 19)))
-          return 'many';
-        if (n == 1)
-          return 'one';
-        return 'other';
-      },
-      '16': function(n) {
-        if ((n % 10) == 1 && n != 11)
-          return 'one';
-        return 'other';
-      },
-      '17': function(n) {
-        if (n == 3)
-          return 'few';
-        if (n === 0)
-          return 'zero';
-        if (n == 6)
-          return 'many';
-        if (n == 2)
-          return 'two';
-        if (n == 1)
-          return 'one';
-        return 'other';
-      },
-      '18': function(n) {
-        if (n === 0)
-          return 'zero';
-        if ((isBetween(n, 0, 2)) && n !== 0 && n != 2)
-          return 'one';
-        return 'other';
-      },
-      '19': function(n) {
-        if ((isBetween(n, 2, 10)))
-          return 'few';
-        if ((isBetween(n, 0, 1)))
-          return 'one';
-        return 'other';
-      },
-      '20': function(n) {
-        if ((isBetween((n % 10), 3, 4) || ((n % 10) == 9)) && !(
-            isBetween((n % 100), 10, 19) ||
-            isBetween((n % 100), 70, 79) ||
-            isBetween((n % 100), 90, 99)
-            ))
-          return 'few';
-        if ((n % 1000000) === 0 && n !== 0)
-          return 'many';
-        if ((n % 10) == 2 && !isIn((n % 100), [12, 72, 92]))
-          return 'two';
-        if ((n % 10) == 1 && !isIn((n % 100), [11, 71, 91]))
-          return 'one';
-        return 'other';
-      },
-      '21': function(n) {
-        if (n === 0)
-          return 'zero';
-        if (n == 1)
-          return 'one';
-        return 'other';
-      },
-      '22': function(n) {
-        if ((isBetween(n, 0, 1)) || (isBetween(n, 11, 99)))
-          return 'one';
-        return 'other';
-      },
-      '23': function(n) {
-        if ((isBetween((n % 10), 1, 2)) || (n % 20) === 0)
-          return 'one';
-        return 'other';
-      },
-      '24': function(n) {
-        if ((isBetween(n, 3, 10) || isBetween(n, 13, 19)))
-          return 'few';
-        if (isIn(n, [2, 12]))
-          return 'two';
-        if (isIn(n, [1, 11]))
-          return 'one';
-        return 'other';
-      }
-    };
-
-    // return a function that gives the plural form name for a given integer
-    var index = locales2rules[lang.replace(/-.*$/, '')];
-    if (!(index in pluralRules)) {
-      consoleWarn('plural form unknown for [' + lang + ']');
-      return function() { return 'other'; };
-    }
-    return pluralRules[index];
-  }
-
-  // pre-defined 'plural' macro
-  gMacros.plural = function(str, param, key, prop) {
-    var n = parseFloat(param);
-    if (isNaN(n))
-      return str;
-
-    // TODO: support other properties (l20n still doesn't...)
-    if (prop != gTextProp)
-      return str;
-
-    // initialize _pluralRules
-    if (!gMacros._pluralRules) {
-      gMacros._pluralRules = getPluralRules(gLanguage);
-    }
-    var index = '[' + gMacros._pluralRules(n) + ']';
-
-    // try to find a [zero|one|two] key if it's defined
-    if (n === 0 && (key + '[zero]') in gL10nData) {
-      str = gL10nData[key + '[zero]'][prop];
-    } else if (n == 1 && (key + '[one]') in gL10nData) {
-      str = gL10nData[key + '[one]'][prop];
-    } else if (n == 2 && (key + '[two]') in gL10nData) {
-      str = gL10nData[key + '[two]'][prop];
-    } else if ((key + index) in gL10nData) {
-      str = gL10nData[key + index][prop];
-    } else if ((key + '[other]') in gL10nData) {
-      str = gL10nData[key + '[other]'][prop];
-    }
-
-    return str;
-  };
-
-
-  /**
-   * l10n dictionary functions
-   */
-
-  // fetch an l10n object, warn if not found, apply `args' if possible
-  function getL10nData(key, args) {
-    var data = gL10nData[key];
-    if (!data) {
-      consoleWarn('#' + key + ' missing for [' + gLanguage + ']');
-    }
-
-    /** This is where l10n expressions should be processed.
-      * The plan is to support C-style expressions from the l20n project;
-      * until then, only two kinds of simple expressions are supported:
-      *   {[ index ]} and {{ arguments }}.
-      */
-    var rv = {};
-    for (var prop in data) {
-      var str = data[prop];
-      str = substIndexes(str, args, key, prop);
-      str = substArguments(str, args);
-      rv[prop] = str;
-    }
-    return rv;
-  }
-
-  // replace {[macros]} with their values
-  function substIndexes(str, args, key, prop) {
-    var reIndex = /\{\[\s*([a-zA-Z]+)\(([a-zA-Z]+)\)\s*\]\}/;
-    var reMatch = reIndex.exec(str);
-    if (!reMatch || !reMatch.length)
-      return str;
-
-    // an index/macro has been found
-    // Note: at the moment, only one parameter is supported
-    var macroName = reMatch[1];
-    var paramName = reMatch[2];
-    var param;
-    if (args && paramName in args) {
-      param = args[paramName];
-    } else if (paramName in gL10nData) {
-      param = gL10nData[paramName];
-    }
-
-    // there's no macro parser yet: it has to be defined in gMacros
-    if (macroName in gMacros) {
-      var macro = gMacros[macroName];
-      str = macro(str, param, key, prop);
-    }
-    return str;
-  }
-
-  // replace {{arguments}} with their values
-  function substArguments(str, args) {
-    var reArgs = /\{\{\s*([a-zA-Z\.]+)\s*\}\}/;
-    var match = reArgs.exec(str);
-    while (match) {
-      if (!match || match.length < 2)
-        return str; // argument key not found
-
-      var arg = match[1];
-      var sub = '';
-      if (arg in args) {
-        sub = args[arg];
-      } else if (arg in gL10nData) {
-        sub = gL10nData[arg][gTextProp];
-      } else {
-        consoleWarn('could not find argument {{' + arg + '}}');
-        return str;
-      }
-
-      str = str.substring(0, match.index) + sub +
-            str.substr(match.index + match[0].length);
-      match = reArgs.exec(str);
-    }
-    return str;
-  }
-
-  // translate an HTML element
-  function translateElement(element) {
-    var l10n = getL10nAttributes(element);
-    if (!l10n.id)
-      return;
-
-    // get the related l10n object
-    var data = getL10nData(l10n.id, l10n.args);
-    if (!data) {
-      consoleWarn('#' + l10n.id + ' missing for [' + gLanguage + ']');
-      return;
-    }
-
-    // translate element (TODO: security checks?)
-    // for the node content, replace the content of the first child textNode
-    // and clear other child textNodes
-    if (data[gTextProp]) { // XXX
-      if (getChildElementCount(element) === 0) {
-        element[gTextProp] = data[gTextProp];
-      } else {
-        var children = element.childNodes,
-            found = false;
-        for (var i = 0, l = children.length; i < l; i++) {
-          if (children[i].nodeType === 3 &&
-              /\S/.test(children[i].textContent)) { // XXX
-            // using nodeValue seems cross-browser
-            if (found) {
-              children[i].nodeValue = '';
-            } else {
-              children[i].nodeValue = data[gTextProp];
-              found = true;
-            }
-          }
-        }
-        if (!found) {
-          consoleWarn('unexpected error, could not translate element content');
-        }
-      }
-      delete data[gTextProp];
-    }
-
-    for (var k in data) {
-      element[k] = data[k];
-    }
-  }
-
-  // webkit browsers don't currently support 'children' on SVG elements...
-  function getChildElementCount(element) {
-    if (element.children) {
-      return element.children.length;
-    }
-    if (typeof element.childElementCount !== 'undefined') {
-      return element.childElementCount;
-    }
-    var count = 0;
-    for (var i = 0; i < element.childNodes.length; i++) {
-      count += element.nodeType === 1 ? 1 : 0;
-    }
-    return count;
-  }
-
-  // translate an HTML subtree
-  function translateFragment(element) {
-    element = element || document.documentElement;
-
-    // check all translatable children (= w/ a `data-l10n-id' attribute)
-    var children = getTranslatableChildren(element);
-    var elementCount = children.length;
-    for (var i = 0; i < elementCount; i++) {
-      translateElement(children[i]);
-    }
-
-    // translate element itself if necessary
-    translateElement(element);
-  }
-
-  // Startup & Public API
-
-  function l10nStartup() {
-    gReadyState = 'interactive';
-    consoleLog('loading [' + navigator.language + '] resources, ' +
-        (gAsyncResourceLoading ? 'asynchronously.' : 'synchronously.'));
-
-    // load the default locale and translate the document if required
-    if (document.documentElement.lang === navigator.language) {
-      loadLocale(navigator.language);
-    } else {
-      loadLocale(navigator.language, translateFragment);
-    }
-  }
-
-  // public API
-  var l10n = {
-    start: function() {
-      if (document.readyState === 'complete' ||
-        document.readyState === 'interactive') {
-        window.setTimeout(l10nStartup);
-      } else {
-        document.addEventListener('DOMContentLoaded', l10nStartup);
-      }
-    },
-
-    // get a localized string
-    get: function l10n_get(key, args, fallback) {
-      var data = getL10nData(key, args) || fallback;
-      if (data) {
-        return 'textContent' in data ? data.textContent : '';
-      }
-      return '{{' + key + '}}';
-    },
-
-    // get|set the document language and direction
-    get language() {
-      return {
-        // get|set the document language (ISO-639-1)
-        get code() { return gLanguage; },
-        set code(lang) { loadLocale(lang, translateFragment); },
-
-        // get the direction (ltr|rtl) of the current language
-        get direction() {
-          // http://www.w3.org/International/questions/qa-scripts
-          // Arabic, Hebrew, Farsi, Pashto, Urdu
-          var rtlList = ['ar', 'he', 'fa', 'ps', 'ur'];
-          return (rtlList.indexOf(gLanguage) >= 0) ? 'rtl' : 'ltr';
-        }
-      };
-    },
-
-    // translate an element or document fragment
-    translate: translateFragment,
-
-    // get (a clone of) the dictionary for the current locale
-    get dictionary() { return JSON.parse(JSON.stringify(gL10nData)); },
-
-    // this can be used to prevent race conditions
-    get readyState() { return gReadyState; },
-    ready: function l10n_ready(callback) {
-      if (!callback)
-        return;
-
-      if (gReadyState == 'complete') {
-        window.setTimeout(callback);
-      } else {
-        window.addEventListener('localized', callback);
-      }
-    }
-  };
-
-  return l10n;
-});
diff --git a/activities/PhysicsJS.activity/locales/en.json b/activities/PhysicsJS.activity/locales/en.json
new file mode 100644
index 000000000..f07be1321
--- /dev/null
+++ b/activities/PhysicsJS.activity/locales/en.json
@@ -0,0 +1,27 @@
+{
+	"TutoPrev": "Prev",
+	"TutoNext": "Next",
+	"TutoEnd": "End",
+	"TutoExplainTitle": "Physics Activity",
+	"TutoExplainContent": "Welcome into the Physics activity. Physics is a physical world simulator and playground. You can add squares, circles, triangles and see them come to life with forces (think gravity and Newton) and inertia",
+	"TutoCircleTitle": "Circle",
+	"TutoCircleContent": "Click here to set circle mode. The next item created will be a circle",
+	"TutoBoxTitle": "Box",
+	"TutoBoxContent": "Click here to set box mode. The next item created will be a box",
+	"TutoTriangleTitle": "Triangle",
+	"TutoTriangleContent": "Click here to set triangle mode. The next item created will be a triangle",
+	"TutoPolygonTitle": "Polygon",
+	"TutoPolygonContent": "Click here to set polygon mode. The next item created will be a polygon",
+	"TutoGravityTitle": "Gravity direction",
+	"TutoGravityContent": "Click on this icon to change gravity direction. Each time you click on the button, the gravity is rotated from 45 degrees",
+	"TutoSensorTitle": "Sensor",
+	"TutoSensorContent": "When this icon is active, your device support gravity so you could just turn your device to change the direction of gravity",
+	"TutoAppleTitle": "Newton",
+	"TutoAppleContent": "Click here to turn on the Newton laws. Objects will attract each other. The strength of attraction depends on size of the object",
+	"TutoClearTitle": "Remove",
+	"TutoClearContent": "Click here to pass in remove mode. Every object you will click will be deleted",
+	"TutoPauseTitle": "Pause",
+	"TutoPauseContent": "Click here to freeze the screen or unfreeze it",
+	"TutoBoardTitle": "Board",
+	"TutoBoardContent": "Here all of your objects will appear. Click anywhere to add a new item of the current type or click on an existing item on the board to move it. All objects will be attracted to the point of gravity"
+}
diff --git a/activities/PhysicsJS.activity/locales/es.json b/activities/PhysicsJS.activity/locales/es.json
new file mode 100644
index 000000000..8209b22b3
--- /dev/null
+++ b/activities/PhysicsJS.activity/locales/es.json
@@ -0,0 +1,27 @@
+{
+	"TutoPrev": "Ant",
+	"TutoNext": "Sig",
+	"TutoEnd": "Fin",
+	"TutoExplainTitle": "Actividad \"Física\"",
+	"TutoExplainContent": "Bienvenido a la actividad \"Física\". En \"Física\", el alumno entrará en un simulador/zona de juegos en un mundo físico, donde podrás añadir cuadrados, círculos y triángulos que cobrarán vida mediante fuerzas (como la gravedad descubierta por Newton) e inercia",
+	"TutoCircleTitle": "Círculo",
+	"TutoCircleContent": "Haz clic aquí para entrar en el modo \"Círculo\". El próximo objeto generado será un círculo",
+	"TutoBoxTitle": "Cuadrado",
+	"TutoBoxContent": "Haz clic aquí para entrar en el modo \"Cuadrado\". El próximo objeto generado será un cuadrado",
+	"TutoTriangleTitle": "Triángulo",
+	"TutoTriangleContent": "Haz clic aquí para entrar en el modo \"Triángulo\". El próximo objeto generado será un triángulo",
+	"TutoPolygonTitle": "Polígono",
+	"TutoPolygonContent": "Haz clic aquí para entrar en el modo \"Polígono\". El próximo objeto generado será un polígono",
+	"TutoGravityTitle": "Dirección de la gravedad",
+	"TutoGravityContent": "Haz clic aquí para cambiar la dirección de la gravedad. Cada vez que hagas clic en el botón, la gravedad rotará 45 grados",
+	"TutoSensorTitle": "Sensor",
+	"TutoSensorContent": "Cuando este icono esté activado, tu dispositivo ajustará la gravedad, así que simplemente deberás girarlo para cambiar la gravedad del juego",
+	"TutoAppleTitle": "Newton",
+	"TutoAppleContent": "Haz clic aquí para revisar las leyes de Newton, que básicamente explican que los objetos se atraen entre sí mediante una fuerza que depende del tamaño de los objetos",
+	"TutoClearTitle": "Eliminar",
+	"TutoClearContent": "Haz clic aquí para activar el modo \"Eliminar\", con el que podrás eliminar cualquier objeto haciendo clic sobre él",
+	"TutoPauseTitle": "Pausar",
+	"TutoPauseContent": "Haz clic aquí para pausar/reanudar la actividad",
+	"TutoBoardTitle": "Tablero",
+	"TutoBoardContent": "Aquí aparecerán todos tus objetos. Haz clic en cualquier punto del tablero para añadir un nuevo objeto del tipo seleccionado, o haz clic sobre un objeto ya existente para moverlo. Los objetos se verán atraídos por la gravedad que hayas ajustado"
+}
diff --git a/activities/PhysicsJS.activity/locales/fr.json b/activities/PhysicsJS.activity/locales/fr.json
new file mode 100644
index 000000000..533fefe41
--- /dev/null
+++ b/activities/PhysicsJS.activity/locales/fr.json
@@ -0,0 +1,27 @@
+{
+	"TutoPrev": "Préc",
+	"TutoNext": "Suiv",
+	"TutoEnd": "Fin",
+	"TutoExplainTitle": "Activité Physics",
+	"TutoExplainContent": "Bienvenue dans l'activité Physics. Physics est un simulateur du monde physique. Vous pouvez ajouter des carrés, ronds, triangles et les voir prendre vie en fonction des forces (pensez à la gravité et à Newton) et de l'inertie",
+	"TutoCircleTitle": "Cercle",
+	"TutoCircleContent": "Cliquez ici pour passer en mode cercle. Le prochain élément créé sera un cercle",
+	"TutoBoxTitle": "Carré",
+	"TutoBoxContent": "Cliquez ici pour passer en mode carré. Le prochain élément créé sera un carré",
+	"TutoTriangleTitle": "Triangle",
+	"TutoTriangleContent": "Cliquez ici pour passer en mode triangle. Le prochain élément créé sera un triangle",
+	"TutoPolygonTitle": "Polygone",
+	"TutoPolygonContent": "Cliquez ici pour passer en mode polygone. Le prochain élément créé sera un polygone",
+	"TutoGravityTitle": "Direction Gravité",
+	"TutoGravityContent": "Cliquez sur cet icône pour changer la direction de la gravité. Chaque fois que vous cliquez sur le bouton, la gravité tourne de 45 degrés",
+	"TutoSensorTitle": "Capteur",
+	"TutoSensorContent": "Quand cet icône est actif, votre machine supporte la gravité, vous pouvez simplement tourner votre machine pour changer la direction de la gravité",
+	"TutoAppleTitle": "Newton",
+	"TutoAppleContent": "Cliquez ici pour passer à la loi de Newton. Les éléments seront attirés les uns par les autres. La force de l'attraction dépend de la taille de l'élément",
+	"TutoClearTitle": "Supprimer",
+	"TutoClearContent": "Cliquez sur cet icône pour passer en mode suppression. Tous les objets sur lequel vous cliquerez ensuite seront supprimés",
+	"TutoPauseTitle": "Pause",
+	"TutoPauseContent": "Cliquez ici pour mettre en pause la simulation, cliquez à nouveau pour la relancer",
+	"TutoBoardTitle": "Plateau",
+	"TutoBoardContent": "C'est ici que tous les éléments apparaissent. Cliquez n'importe où pour ajouter un nouvel élément du type actuel ou cliquez sur un élément existant pour le déplacer. Tous les éléments sont attirés par le point de gravité"
+}
diff --git a/activities/PhysicsJS.activity/locales/pl.json b/activities/PhysicsJS.activity/locales/pl.json
new file mode 100644
index 000000000..5ceb5fd3e
--- /dev/null
+++ b/activities/PhysicsJS.activity/locales/pl.json
@@ -0,0 +1,27 @@
+{
+	"TutoPrev": "Poprz",
+	"TutoNext": "Dalej",
+	"TutoEnd": "Koniec",
+	"TutoExplainTitle": "PhysicsJS",
+	"TutoExplainContent": "Witaj w aplikacji PhysicsJS. PhysicsJS to symulator i plac zabaw fizycznego świata. Możesz dodawać kwadraty, trójkąty oraz kółka i patrzeć jak oddziałowują z siłami (np. grawitacją czy siłami Newtona) i inercją.",
+	"TutoCircleTitle": "Kółko",
+	"TutoCircleContent": "Kliknij aby zacząć tworzyć kółko.",
+	"TutoBoxTitle": "Kwadrat",
+	"TutoBoxContent": "Kliknij aby zacząć tworzyć kwadrat.",
+	"TutoTriangleTitle": "Trójkąt",
+	"TutoTriangleContent": "Kliknij aby zacząć tworzyć trójkąt.",
+	"TutoPolygonTitle": "Wielokąt",
+	"TutoPolygonContent": "Kliknij aby zacząć tworzyć wielokąt.",
+	"TutoGravityTitle": "Grawitacja",
+	"TutoGravityContent": "Kliknij aby zmienić środek grawitacji.",
+	"TutoSensorTitle": "Sensor",
+	"TutoSensorContent": "Kliknij aby stworzyć sensor.",
+	"TutoAppleTitle": "Newton",
+	"TutoAppleContent": "Klinij aby włączyć prawo Newtona. Obiekty zaczną się przyciągać. Wartość siły zależy od wielkości obiektu.",
+	"TutoClearTitle": "Usuń",
+	"TutoClearContent": "Kliknij tutaj a później na obiekt aby go usunąć.",
+	"TutoPauseTitle": "Pauza",
+	"TutoPauseContent": "Kliknij aby zamrozić ekran.",
+	"TutoBoardTitle": "Plansza",
+	"TutoBoardContent": "Tutaj pojawią się wszytskie twoje obiekty. Będą one przyciągane do środka grawitacji."
+}
diff --git a/activities/PhysicsJS.activity/localize.ini b/activities/PhysicsJS.activity/localize.ini
deleted file mode 100644
index 3bd9f635c..000000000
--- a/activities/PhysicsJS.activity/localize.ini
+++ /dev/null
@@ -1,134 +0,0 @@
-[*]
-TutoPrev=Prev
-TutoNext=Next
-TutoEnd=End
-TutoExplainTitle=Physics Activity
-TutoExplainContent=Welcome into the Physics activity. Physics is a physical world simulator and playground. You can add squares, circles, triangles and see them come to life with forces (think gravity and Newton) and inertia
-TutoCircleTitle=Circle
-TutoCircleContent=Click here to set circle mode. The next item created will be a circle
-TutoBoxTitle=Box
-TutoBoxContent=Click here to set box mode. The next item created will be a box
-TutoTriangleTitle=Triangle
-TutoTriangleContent=Click here to set triangle mode. The next item created will be a triangle
-TutoPolygonTitle=Polygon
-TutoPolygonContent=Click here to set polygon mode. The next item created will be a polygon
-TutoGravityTitle=Gravity direction
-TutoGravityContent=Click on this icon to change gravity direction. Each time you click on the button, the gravity is rotated from 45 degrees
-TutoSensorTitle=Sensor
-TutoSensorContent=When this icon is active, your device support gravity so you could just turn your device to change the direction of gravity
-TutoAppleTitle=Newton
-TutoAppleContent=Click here to turn on the Newton laws. Objects will attract each other. The strength of attraction depends on size of the object
-TutoClearTitle=Remove
-TutoClearContent=Click here to pass in remove mode. Every object you will click will be deleted
-TutoPauseTitle=Pause
-TutoPauseContent=Click here to freeze the screen or unfreeze it
-TutoBoardTitle=Board
-TutoBoardContent=Here all of your objects will appear. Click anywhere to add a new item of the current type or click on an existing item on the board to move it. All objects will be attracted to the point of gravity
-
-[en]
-TutoPrev=Prev
-TutoNext=Next
-TutoEnd=End
-TutoExplainTitle=Physics Activity
-TutoExplainContent=Welcome into the Physics activity. Physics is a physical world simulator and playground. You can add squares, circles, triangles and see them come to life with forces (think gravity and Newton) and inertia
-TutoCircleTitle=Circle
-TutoCircleContent=Click here to set circle mode. The next item created will be a circle
-TutoBoxTitle=Box
-TutoBoxContent=Click here to set box mode. The next item created will be a box
-TutoTriangleTitle=Triangle
-TutoTriangleContent=Click here to set triangle mode. The next item created will be a triangle
-TutoPolygonTitle=Polygon
-TutoPolygonContent=Click here to set polygon mode. The next item created will be a polygon
-TutoGravityTitle=Gravity direction
-TutoGravityContent=Click on this icon to change gravity direction. Each time you click on the button, the gravity is rotated from 45 degrees
-TutoSensorTitle=Sensor
-TutoSensorContent=When this icon is active, your device support gravity so you could just turn your device to change the direction of gravity
-TutoAppleTitle=Newton
-TutoAppleContent=Click here to turn on the Newton laws. Objects will attract each other. The strength of attraction depends on size of the object
-TutoClearTitle=Remove
-TutoClearContent=Click here to pass in remove mode. Every object you will click will be deleted
-TutoPauseTitle=Pause
-TutoPauseContent=Click here to freeze the screen or unfreeze it
-TutoBoardTitle=Board
-TutoBoardContent=Here all of your objects will appear. Click anywhere to add a new item of the current type or click on an existing item on the board to move it. All objects will be attracted to the point of gravity
-
-[es]
-TutoPrev=Ant
-TutoNext=Sig
-TutoEnd=Fin
-TutoExplainTitle=Actividad "Física"
-TutoExplainContent=Bienvenido a la actividad "Física". En "Física", el alumno entrará en un simulador/zona de juegos en un mundo físico, donde podrás añadir cuadrados, círculos y triángulos que cobrarán vida mediante fuerzas (como la gravedad descubierta por Newton) e inercia
-TutoCircleTitle=Círculo
-TutoCircleContent=Haz clic aquí para entrar en el modo "Círculo". El próximo objeto generado será un círculo
-TutoBoxTitle=Cuadrado
-TutoBoxContent=Haz clic aquí para entrar en el modo "Cuadrado". El próximo objeto generado será un cuadrado
-TutoTriangleTitle=Triángulo
-TutoTriangleContent=Haz clic aquí para entrar en el modo "Triángulo". El próximo objeto generado será un triángulo
-TutoPolygonTitle=Polígono
-TutoPolygonContent=Haz clic aquí para entrar en el modo "Polígono". El próximo objeto generado será un polígono
-TutoGravityTitle=Dirección de la gravedad
-TutoGravityContent=Haz clic aquí para cambiar la dirección de la gravedad. Cada vez que hagas clic en el botón, la gravedad rotará 45 grados
-TutoSensorTitle=Sensor
-TutoSensorContent=Cuando este icono esté activado, tu dispositivo ajustará la gravedad, así que simplemente deberás girarlo para cambiar la gravedad del juego
-TutoAppleTitle=Newton
-TutoAppleContent=Haz clic aquí para revisar las leyes de Newton, que básicamente explican que los objetos se atraen entre sí mediante una fuerza que depende del tamaño de los objetos
-TutoClearTitle=Eliminar
-TutoClearContent=Haz clic aquí para activar el modo "Eliminar", con el que podrás eliminar cualquier objeto haciendo clic sobre él
-TutoPauseTitle=Pausar
-TutoPauseContent=Haz clic aquí para pausar/reanudar la actividad
-TutoBoardTitle=Tablero
-TutoBoardContent=Aquí aparecerán todos tus objetos. Haz clic en cualquier punto del tablero para añadir un nuevo objeto del tipo seleccionado, o haz clic sobre un objeto ya existente para moverlo. Los objetos se verán atraídos por la gravedad que hayas ajustado
-
-[fr]
-TutoPrev=Préc
-TutoNext=Suiv
-TutoEnd=Fin
-TutoExplainTitle=Activité Physics
-TutoExplainContent=Bienvenue dans l'activité Physics. Physics est un simulateur du monde physique. Vous pouvez ajouter des carrés, ronds, triangles et les voir prendre vie en fonction des forces (pensez à la gravité et à Newton) et de l'inertie
-TutoCircleTitle=Cercle
-TutoCircleContent=Cliquez ici pour passer en mode cercle. Le prochain élément créé sera un cercle
-TutoBoxTitle=Carré
-TutoBoxContent=Cliquez ici pour passer en mode carré. Le prochain élément créé sera un carré
-TutoTriangleTitle=Triangle
-TutoTriangleContent=Cliquez ici pour passer en mode triangle. Le prochain élément créé sera un triangle
-TutoPolygonTitle=Polygone
-TutoPolygonContent=Cliquez ici pour passer en mode polygone. Le prochain élément créé sera un polygone
-TutoGravityTitle=Direction Gravité
-TutoGravityContent=Cliquez sur cet icône pour changer la direction de la gravité. Chaque fois que vous cliquez sur le bouton, la gravité tourne de 45 degrés
-TutoSensorTitle=Capteur
-TutoSensorContent=Quand cet icône est actif, votre machine supporte la gravité, vous pouvez simplement tourner votre machine pour changer la direction de la gravité
-TutoAppleTitle=Newton
-TutoAppleContent=Cliquez ici pour passer à la loi de Newton. Les éléments seront attirés les uns par les autres. La force de l'attraction dépend de la taille de l'élément
-TutoClearTitle=Supprimer
-TutoClearContent=Cliquez sur cet icône pour passer en mode suppression. Tous les objets sur lequel vous cliquerez ensuite seront supprimés
-TutoPauseTitle=Pause
-TutoPauseContent=Cliquez ici pour mettre en pause la simulation, cliquez à nouveau pour la relancer
-TutoBoardTitle=Plateau
-TutoBoardContent=C'est ici que tous les éléments apparaissent. Cliquez n'importe où pour ajouter un nouvel élément du type actuel ou cliquez sur un élément existant pour le déplacer. Tous les éléments sont attirés par le point de gravité
-
-[pl]
-TutoPrev=Poprz
-TutoNext=Dalej
-TutoEnd=Koniec
-TutoExplainTitle=PhysicsJS
-TutoExplainContent=Witaj w aplikacji PhysicsJS. PhysicsJS to symulator i plac zabaw fizycznego świata. Możesz dodawać kwadraty, trójkąty oraz kółka i patrzeć jak oddziałowują z siłami (np. grawitacją czy siłami Newtona) i inercją.
-TutoCircleTitle=Kółko
-TutoCircleContent=Kliknij aby zacząć tworzyć kółko.
-TutoBoxTitle=Kwadrat
-TutoBoxContent=Kliknij aby zacząć tworzyć kwadrat.
-TutoTriangleTitle=Trójkąt
-TutoTriangleContent=Kliknij aby zacząć tworzyć trójkąt.
-TutoPolygonTitle=Wielokąt
-TutoPolygonContent=Kliknij aby zacząć tworzyć wielokąt.
-TutoGravityTitle=Grawitacja
-TutoGravityContent=Kliknij aby zmienić środek grawitacji.
-TutoSensorTitle=Sensor
-TutoSensorContent=Kliknij aby stworzyć sensor.
-TutoAppleTitle=Newton
-TutoAppleContent=Klinij aby włączyć prawo Newtona. Obiekty zaczną się przyciągać. Wartość siły zależy od wielkości obiektu.
-TutoClearTitle=Usuń
-TutoClearContent=Kliknij tutaj a później na obiekt aby go usunąć.
-TutoPauseTitle=Pauza
-TutoPauseContent=Kliknij aby zamrozić ekran.
-TutoBoardTitle=Plansza
-TutoBoardContent=Tutaj pojawią się wszytskie twoje obiekty. Będą one przyciągane do środka grawitacji.
diff --git a/activities/PhysicsJS.activity/package-lock.json b/activities/PhysicsJS.activity/package-lock.json
new file mode 100644
index 000000000..9adbb6e26
--- /dev/null
+++ b/activities/PhysicsJS.activity/package-lock.json
@@ -0,0 +1,23 @@
+{
+  "name": "PhysicsJS.activity",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "dependencies": {
+        "fs": "^0.0.1-security",
+        "js-ini": "^1.6.0"
+      }
+    },
+    "node_modules/fs": {
+      "version": "0.0.1-security",
+      "resolved": "https://registry.npmjs.org/fs/-/fs-0.0.1-security.tgz",
+      "integrity": "sha512-3XY9e1pP0CVEUCdj5BmfIZxRBTSDycnbqhIOGec9QYtmVH2fbLpj86CFWkrNOkt/Fvty4KZG5lTglL9j/gJ87w=="
+    },
+    "node_modules/js-ini": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/js-ini/-/js-ini-1.6.0.tgz",
+      "integrity": "sha512-9Vx+NVkMRNY4i7pLLIGdXIQbP1iwB3fP2IG1zMCgeUUvR1ODmTKa33eR/J9FHoorNsfoJr9/2SVqeSKLwPD9Nw=="
+    }
+  }
+}
diff --git a/activities/PhysicsJS.activity/po/en.po b/activities/PhysicsJS.activity/po/en.po
deleted file mode 100644
index 0ac81c45d..000000000
--- a/activities/PhysicsJS.activity/po/en.po
+++ /dev/null
@@ -1,140 +0,0 @@
-#. extracted from ../localize.ini
-#, fuzzy
-msgid ""
-msgstr ""
-"Project-Id-Version: PACKAGE VERSION\n"
-"Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: Sun Apr 11 2021 11:27:18 GMT+0200 (heure d’été d’Europe centrale)\n"
-"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
-"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
-"Language-Team: LANGUAGE <LL@li.org>\n"
-"MIME-Version: 1.0\n"
-"Content-Type: text/plain; charset=UTF-8\n"
-"Content-Transfer-Encoding: 8bit\n"
-"X-Generator: ini2po 0.0.1\n"
-
-#: TutoPrev
-msgctxt "TutoPrev"
-msgid "Prev"
-msgstr "Prev"
-
-#: TutoNext
-msgctxt "TutoNext"
-msgid "Next"
-msgstr "Next"
-
-#: TutoEnd
-msgctxt "TutoEnd"
-msgid "End"
-msgstr "End"
-
-#: TutoExplainTitle
-msgctxt "TutoExplainTitle"
-msgid "Physics Activity"
-msgstr "Physics Activity"
-
-#: TutoExplainContent
-msgctxt "TutoExplainContent"
-msgid "Welcome into the Physics activity. Physics is a physical world simulator and playground. You can add squares, circles, triangles and see them come to life with forces (think gravity and Newton) and inertia"
-msgstr "Welcome into the Physics activity. Physics is a physical world simulator and playground. You can add squares, circles, triangles and see them come to life with forces (think gravity and Newton) and inertia"
-
-#: TutoCircleTitle
-msgctxt "TutoCircleTitle"
-msgid "Circle"
-msgstr "Circle"
-
-#: TutoCircleContent
-msgctxt "TutoCircleContent"
-msgid "Click here to set circle mode. The next item created will be a circle"
-msgstr "Click here to set circle mode. The next item created will be a circle"
-
-#: TutoBoxTitle
-msgctxt "TutoBoxTitle"
-msgid "Box"
-msgstr "Box"
-
-#: TutoBoxContent
-msgctxt "TutoBoxContent"
-msgid "Click here to set box mode. The next item created will be a box"
-msgstr "Click here to set box mode. The next item created will be a box"
-
-#: TutoTriangleTitle
-msgctxt "TutoTriangleTitle"
-msgid "Triangle"
-msgstr "Triangle"
-
-#: TutoTriangleContent
-msgctxt "TutoTriangleContent"
-msgid "Click here to set triangle mode. The next item created will be a triangle"
-msgstr "Click here to set triangle mode. The next item created will be a triangle"
-
-#: TutoPolygonTitle
-msgctxt "TutoPolygonTitle"
-msgid "Polygon"
-msgstr "Polygon"
-
-#: TutoPolygonContent
-msgctxt "TutoPolygonContent"
-msgid "Click here to set polygon mode. The next item created will be a polygon"
-msgstr "Click here to set polygon mode. The next item created will be a polygon"
-
-#: TutoGravityTitle
-msgctxt "TutoGravityTitle"
-msgid "Gravity direction"
-msgstr "Gravity direction"
-
-#: TutoGravityContent
-msgctxt "TutoGravityContent"
-msgid "Click on this icon to change gravity direction. Each time you click on the button, the gravity is rotated from 45 degrees"
-msgstr "Click on this icon to change gravity direction. Each time you click on the button, the gravity is rotated from 45 degrees"
-
-#: TutoSensorTitle
-msgctxt "TutoSensorTitle"
-msgid "Sensor"
-msgstr "Sensor"
-
-#: TutoSensorContent
-msgctxt "TutoSensorContent"
-msgid "When this icon is active, your device support gravity so you could just turn your device to change the direction of gravity"
-msgstr "When this icon is active, your device support gravity so you could just turn your device to change the direction of gravity"
-
-#: TutoAppleTitle
-msgctxt "TutoAppleTitle"
-msgid "Newton"
-msgstr "Newton"
-
-#: TutoAppleContent
-msgctxt "TutoAppleContent"
-msgid "Click here to turn on the Newton laws. Objects will attract each other. The strength of attraction depends on size of the object"
-msgstr "Click here to turn on the Newton laws. Objects will attract each other. The strength of attraction depends on size of the object"
-
-#: TutoClearTitle
-msgctxt "TutoClearTitle"
-msgid "Remove"
-msgstr "Remove"
-
-#: TutoClearContent
-msgctxt "TutoClearContent"
-msgid "Click here to pass in remove mode. Every object you will click will be deleted"
-msgstr "Click here to pass in remove mode. Every object you will click will be deleted"
-
-#: TutoPauseTitle
-msgctxt "TutoPauseTitle"
-msgid "Pause"
-msgstr "Pause"
-
-#: TutoPauseContent
-msgctxt "TutoPauseContent"
-msgid "Click here to freeze the screen or unfreeze it"
-msgstr "Click here to freeze the screen or unfreeze it"
-
-#: TutoBoardTitle
-msgctxt "TutoBoardTitle"
-msgid "Board"
-msgstr "Board"
-
-#: TutoBoardContent
-msgctxt "TutoBoardContent"
-msgid "Here all of your objects will appear. Click anywhere to add a new item of the current type or click on an existing item on the board to move it. All objects will be attracted to the point of gravity"
-msgstr "Here all of your objects will appear. Click anywhere to add a new item of the current type or click on an existing item on the board to move it. All objects will be attracted to the point of gravity"
-
diff --git a/activities/PhysicsJS.activity/po/es.po b/activities/PhysicsJS.activity/po/es.po
deleted file mode 100644
index c6b4450e9..000000000
--- a/activities/PhysicsJS.activity/po/es.po
+++ /dev/null
@@ -1,140 +0,0 @@
-#. extracted from ../localize.ini
-#, fuzzy
-msgid ""
-msgstr ""
-"Project-Id-Version: PACKAGE VERSION\n"
-"Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: Sun Apr 11 2021 11:27:18 GMT+0200 (heure d’été d’Europe centrale)\n"
-"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
-"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
-"Language-Team: LANGUAGE <LL@li.org>\n"
-"MIME-Version: 1.0\n"
-"Content-Type: text/plain; charset=UTF-8\n"
-"Content-Transfer-Encoding: 8bit\n"
-"X-Generator: ini2po 0.0.1\n"
-
-#: TutoPrev
-msgctxt "TutoPrev"
-msgid "Prev"
-msgstr "Ant"
-
-#: TutoNext
-msgctxt "TutoNext"
-msgid "Next"
-msgstr "Sig"
-
-#: TutoEnd
-msgctxt "TutoEnd"
-msgid "End"
-msgstr "Fin"
-
-#: TutoExplainTitle
-msgctxt "TutoExplainTitle"
-msgid "Physics Activity"
-msgstr "Actividad \"Física\""
-
-#: TutoExplainContent
-msgctxt "TutoExplainContent"
-msgid "Welcome into the Physics activity. Physics is a physical world simulator and playground. You can add squares, circles, triangles and see them come to life with forces (think gravity and Newton) and inertia"
-msgstr "Bienvenido a la actividad \"Física\". En \"Física\", el alumno entrará en un simulador/zona de juegos en un mundo físico, donde podrás añadir cuadrados, círculos y triángulos que cobrarán vida mediante fuerzas (como la gravedad descubierta por Newton) e inercia"
-
-#: TutoCircleTitle
-msgctxt "TutoCircleTitle"
-msgid "Circle"
-msgstr "Círculo"
-
-#: TutoCircleContent
-msgctxt "TutoCircleContent"
-msgid "Click here to set circle mode. The next item created will be a circle"
-msgstr "Haz clic aquí para entrar en el modo \"Círculo\". El próximo objeto generado será un círculo"
-
-#: TutoBoxTitle
-msgctxt "TutoBoxTitle"
-msgid "Box"
-msgstr "Cuadrado"
-
-#: TutoBoxContent
-msgctxt "TutoBoxContent"
-msgid "Click here to set box mode. The next item created will be a box"
-msgstr "Haz clic aquí para entrar en el modo \"Cuadrado\". El próximo objeto generado será un cuadrado"
-
-#: TutoTriangleTitle
-msgctxt "TutoTriangleTitle"
-msgid "Triangle"
-msgstr "Triángulo"
-
-#: TutoTriangleContent
-msgctxt "TutoTriangleContent"
-msgid "Click here to set triangle mode. The next item created will be a triangle"
-msgstr "Haz clic aquí para entrar en el modo \"Triángulo\". El próximo objeto generado será un triángulo"
-
-#: TutoPolygonTitle
-msgctxt "TutoPolygonTitle"
-msgid "Polygon"
-msgstr "Polígono"
-
-#: TutoPolygonContent
-msgctxt "TutoPolygonContent"
-msgid "Click here to set polygon mode. The next item created will be a polygon"
-msgstr "Haz clic aquí para entrar en el modo \"Polígono\". El próximo objeto generado será un polígono"
-
-#: TutoGravityTitle
-msgctxt "TutoGravityTitle"
-msgid "Gravity direction"
-msgstr "Dirección de la gravedad"
-
-#: TutoGravityContent
-msgctxt "TutoGravityContent"
-msgid "Click on this icon to change gravity direction. Each time you click on the button, the gravity is rotated from 45 degrees"
-msgstr "Haz clic aquí para cambiar la dirección de la gravedad. Cada vez que hagas clic en el botón, la gravedad rotará 45 grados"
-
-#: TutoSensorTitle
-msgctxt "TutoSensorTitle"
-msgid "Sensor"
-msgstr "Sensor"
-
-#: TutoSensorContent
-msgctxt "TutoSensorContent"
-msgid "When this icon is active, your device support gravity so you could just turn your device to change the direction of gravity"
-msgstr "Cuando este icono esté activado, tu dispositivo ajustará la gravedad, así que simplemente deberás girarlo para cambiar la gravedad del juego"
-
-#: TutoAppleTitle
-msgctxt "TutoAppleTitle"
-msgid "Newton"
-msgstr "Newton"
-
-#: TutoAppleContent
-msgctxt "TutoAppleContent"
-msgid "Click here to turn on the Newton laws. Objects will attract each other. The strength of attraction depends on size of the object"
-msgstr "Haz clic aquí para revisar las leyes de Newton, que básicamente explican que los objetos se atraen entre sí mediante una fuerza que depende del tamaño de los objetos"
-
-#: TutoClearTitle
-msgctxt "TutoClearTitle"
-msgid "Remove"
-msgstr "Eliminar"
-
-#: TutoClearContent
-msgctxt "TutoClearContent"
-msgid "Click here to pass in remove mode. Every object you will click will be deleted"
-msgstr "Haz clic aquí para activar el modo \"Eliminar\", con el que podrás eliminar cualquier objeto haciendo clic sobre él"
-
-#: TutoPauseTitle
-msgctxt "TutoPauseTitle"
-msgid "Pause"
-msgstr "Pausar"
-
-#: TutoPauseContent
-msgctxt "TutoPauseContent"
-msgid "Click here to freeze the screen or unfreeze it"
-msgstr "Haz clic aquí para pausar/reanudar la actividad"
-
-#: TutoBoardTitle
-msgctxt "TutoBoardTitle"
-msgid "Board"
-msgstr "Tablero"
-
-#: TutoBoardContent
-msgctxt "TutoBoardContent"
-msgid "Here all of your objects will appear. Click anywhere to add a new item of the current type or click on an existing item on the board to move it. All objects will be attracted to the point of gravity"
-msgstr "Aquí aparecerán todos tus objetos. Haz clic en cualquier punto del tablero para añadir un nuevo objeto del tipo seleccionado, o haz clic sobre un objeto ya existente para moverlo. Los objetos se verán atraídos por la gravedad que hayas ajustado"
-
diff --git a/activities/PhysicsJS.activity/po/fr.po b/activities/PhysicsJS.activity/po/fr.po
deleted file mode 100644
index 43b4822ff..000000000
--- a/activities/PhysicsJS.activity/po/fr.po
+++ /dev/null
@@ -1,140 +0,0 @@
-#. extracted from ../localize.ini
-#, fuzzy
-msgid ""
-msgstr ""
-"Project-Id-Version: PACKAGE VERSION\n"
-"Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: Sun Apr 11 2021 11:27:18 GMT+0200 (heure d’été d’Europe centrale)\n"
-"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
-"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
-"Language-Team: LANGUAGE <LL@li.org>\n"
-"MIME-Version: 1.0\n"
-"Content-Type: text/plain; charset=UTF-8\n"
-"Content-Transfer-Encoding: 8bit\n"
-"X-Generator: ini2po 0.0.1\n"
-
-#: TutoPrev
-msgctxt "TutoPrev"
-msgid "Prev"
-msgstr "Préc"
-
-#: TutoNext
-msgctxt "TutoNext"
-msgid "Next"
-msgstr "Suiv"
-
-#: TutoEnd
-msgctxt "TutoEnd"
-msgid "End"
-msgstr "Fin"
-
-#: TutoExplainTitle
-msgctxt "TutoExplainTitle"
-msgid "Physics Activity"
-msgstr "Activité Physics"
-
-#: TutoExplainContent
-msgctxt "TutoExplainContent"
-msgid "Welcome into the Physics activity. Physics is a physical world simulator and playground. You can add squares, circles, triangles and see them come to life with forces (think gravity and Newton) and inertia"
-msgstr "Bienvenue dans l'activité Physics. Physics est un simulateur du monde physique. Vous pouvez ajouter des carrés, ronds, triangles et les voir prendre vie en fonction des forces (pensez à la gravité et à Newton) et de l'inertie"
-
-#: TutoCircleTitle
-msgctxt "TutoCircleTitle"
-msgid "Circle"
-msgstr "Cercle"
-
-#: TutoCircleContent
-msgctxt "TutoCircleContent"
-msgid "Click here to set circle mode. The next item created will be a circle"
-msgstr "Cliquez ici pour passer en mode cercle. Le prochain élément créé sera un cercle"
-
-#: TutoBoxTitle
-msgctxt "TutoBoxTitle"
-msgid "Box"
-msgstr "Carré"
-
-#: TutoBoxContent
-msgctxt "TutoBoxContent"
-msgid "Click here to set box mode. The next item created will be a box"
-msgstr "Cliquez ici pour passer en mode carré. Le prochain élément créé sera un carré"
-
-#: TutoTriangleTitle
-msgctxt "TutoTriangleTitle"
-msgid "Triangle"
-msgstr "Triangle"
-
-#: TutoTriangleContent
-msgctxt "TutoTriangleContent"
-msgid "Click here to set triangle mode. The next item created will be a triangle"
-msgstr "Cliquez ici pour passer en mode triangle. Le prochain élément créé sera un triangle"
-
-#: TutoPolygonTitle
-msgctxt "TutoPolygonTitle"
-msgid "Polygon"
-msgstr "Polygone"
-
-#: TutoPolygonContent
-msgctxt "TutoPolygonContent"
-msgid "Click here to set polygon mode. The next item created will be a polygon"
-msgstr "Cliquez ici pour passer en mode polygone. Le prochain élément créé sera un polygone"
-
-#: TutoGravityTitle
-msgctxt "TutoGravityTitle"
-msgid "Gravity direction"
-msgstr "Direction Gravité"
-
-#: TutoGravityContent
-msgctxt "TutoGravityContent"
-msgid "Click on this icon to change gravity direction. Each time you click on the button, the gravity is rotated from 45 degrees"
-msgstr "Cliquez sur cet icône pour changer la direction de la gravité. Chaque fois que vous cliquez sur le bouton, la gravité tourne de 45 degrés"
-
-#: TutoSensorTitle
-msgctxt "TutoSensorTitle"
-msgid "Sensor"
-msgstr "Capteur"
-
-#: TutoSensorContent
-msgctxt "TutoSensorContent"
-msgid "When this icon is active, your device support gravity so you could just turn your device to change the direction of gravity"
-msgstr "Quand cet icône est actif, votre machine supporte la gravité, vous pouvez simplement tourner votre machine pour changer la direction de la gravité"
-
-#: TutoAppleTitle
-msgctxt "TutoAppleTitle"
-msgid "Newton"
-msgstr "Newton"
-
-#: TutoAppleContent
-msgctxt "TutoAppleContent"
-msgid "Click here to turn on the Newton laws. Objects will attract each other. The strength of attraction depends on size of the object"
-msgstr "Cliquez ici pour passer à la loi de Newton. Les éléments seront attirés les uns par les autres. La force de l'attraction dépend de la taille de l'élément"
-
-#: TutoClearTitle
-msgctxt "TutoClearTitle"
-msgid "Remove"
-msgstr "Supprimer"
-
-#: TutoClearContent
-msgctxt "TutoClearContent"
-msgid "Click here to pass in remove mode. Every object you will click will be deleted"
-msgstr "Cliquez sur cet icône pour passer en mode suppression. Tous les objets sur lequel vous cliquerez ensuite seront supprimés"
-
-#: TutoPauseTitle
-msgctxt "TutoPauseTitle"
-msgid "Pause"
-msgstr "Pause"
-
-#: TutoPauseContent
-msgctxt "TutoPauseContent"
-msgid "Click here to freeze the screen or unfreeze it"
-msgstr "Cliquez ici pour mettre en pause la simulation, cliquez à nouveau pour la relancer"
-
-#: TutoBoardTitle
-msgctxt "TutoBoardTitle"
-msgid "Board"
-msgstr "Plateau"
-
-#: TutoBoardContent
-msgctxt "TutoBoardContent"
-msgid "Here all of your objects will appear. Click anywhere to add a new item of the current type or click on an existing item on the board to move it. All objects will be attracted to the point of gravity"
-msgstr "C'est ici que tous les éléments apparaissent. Cliquez n'importe où pour ajouter un nouvel élément du type actuel ou cliquez sur un élément existant pour le déplacer. Tous les éléments sont attirés par le point de gravité"
-
diff --git a/activities/PhysicsJS.activity/po/pl.po b/activities/PhysicsJS.activity/po/pl.po
deleted file mode 100644
index 5a120518e..000000000
--- a/activities/PhysicsJS.activity/po/pl.po
+++ /dev/null
@@ -1,140 +0,0 @@
-#. extracted from ../localize.ini
-#, fuzzy
-msgid ""
-msgstr ""
-"Project-Id-Version: PACKAGE VERSION\n"
-"Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: Sun Apr 11 2021 11:27:18 GMT+0200 (heure d’été d’Europe centrale)\n"
-"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
-"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
-"Language-Team: LANGUAGE <LL@li.org>\n"
-"MIME-Version: 1.0\n"
-"Content-Type: text/plain; charset=UTF-8\n"
-"Content-Transfer-Encoding: 8bit\n"
-"X-Generator: ini2po 0.0.1\n"
-
-#: TutoPrev
-msgctxt "TutoPrev"
-msgid "Prev"
-msgstr "Poprz"
-
-#: TutoNext
-msgctxt "TutoNext"
-msgid "Next"
-msgstr "Dalej"
-
-#: TutoEnd
-msgctxt "TutoEnd"
-msgid "End"
-msgstr "Koniec"
-
-#: TutoExplainTitle
-msgctxt "TutoExplainTitle"
-msgid "Physics Activity"
-msgstr "PhysicsJS"
-
-#: TutoExplainContent
-msgctxt "TutoExplainContent"
-msgid "Welcome into the Physics activity. Physics is a physical world simulator and playground. You can add squares, circles, triangles and see them come to life with forces (think gravity and Newton) and inertia"
-msgstr "Witaj w aplikacji PhysicsJS. PhysicsJS to symulator i plac zabaw fizycznego świata. Możesz dodawać kwadraty, trójkąty oraz kółka i patrzeć jak oddziałowują z siłami (np. grawitacją czy siłami Newtona) i inercją."
-
-#: TutoCircleTitle
-msgctxt "TutoCircleTitle"
-msgid "Circle"
-msgstr "Kółko"
-
-#: TutoCircleContent
-msgctxt "TutoCircleContent"
-msgid "Click here to set circle mode. The next item created will be a circle"
-msgstr "Kliknij aby zacząć tworzyć kółko."
-
-#: TutoBoxTitle
-msgctxt "TutoBoxTitle"
-msgid "Box"
-msgstr "Kwadrat"
-
-#: TutoBoxContent
-msgctxt "TutoBoxContent"
-msgid "Click here to set box mode. The next item created will be a box"
-msgstr "Kliknij aby zacząć tworzyć kwadrat."
-
-#: TutoTriangleTitle
-msgctxt "TutoTriangleTitle"
-msgid "Triangle"
-msgstr "Trójkąt"
-
-#: TutoTriangleContent
-msgctxt "TutoTriangleContent"
-msgid "Click here to set triangle mode. The next item created will be a triangle"
-msgstr "Kliknij aby zacząć tworzyć trójkąt."
-
-#: TutoPolygonTitle
-msgctxt "TutoPolygonTitle"
-msgid "Polygon"
-msgstr "Wielokąt"
-
-#: TutoPolygonContent
-msgctxt "TutoPolygonContent"
-msgid "Click here to set polygon mode. The next item created will be a polygon"
-msgstr "Kliknij aby zacząć tworzyć wielokąt."
-
-#: TutoGravityTitle
-msgctxt "TutoGravityTitle"
-msgid "Gravity direction"
-msgstr "Grawitacja"
-
-#: TutoGravityContent
-msgctxt "TutoGravityContent"
-msgid "Click on this icon to change gravity direction. Each time you click on the button, the gravity is rotated from 45 degrees"
-msgstr "Kliknij aby zmienić środek grawitacji."
-
-#: TutoSensorTitle
-msgctxt "TutoSensorTitle"
-msgid "Sensor"
-msgstr "Sensor"
-
-#: TutoSensorContent
-msgctxt "TutoSensorContent"
-msgid "When this icon is active, your device support gravity so you could just turn your device to change the direction of gravity"
-msgstr "Kliknij aby stworzyć sensor."
-
-#: TutoAppleTitle
-msgctxt "TutoAppleTitle"
-msgid "Newton"
-msgstr "Newton"
-
-#: TutoAppleContent
-msgctxt "TutoAppleContent"
-msgid "Click here to turn on the Newton laws. Objects will attract each other. The strength of attraction depends on size of the object"
-msgstr "Klinij aby włączyć prawo Newtona. Obiekty zaczną się przyciągać. Wartość siły zależy od wielkości obiektu."
-
-#: TutoClearTitle
-msgctxt "TutoClearTitle"
-msgid "Remove"
-msgstr "Usuń"
-
-#: TutoClearContent
-msgctxt "TutoClearContent"
-msgid "Click here to pass in remove mode. Every object you will click will be deleted"
-msgstr "Kliknij tutaj a później na obiekt aby go usunąć."
-
-#: TutoPauseTitle
-msgctxt "TutoPauseTitle"
-msgid "Pause"
-msgstr "Pauza"
-
-#: TutoPauseContent
-msgctxt "TutoPauseContent"
-msgid "Click here to freeze the screen or unfreeze it"
-msgstr "Kliknij aby zamrozić ekran."
-
-#: TutoBoardTitle
-msgctxt "TutoBoardTitle"
-msgid "Board"
-msgstr "Plansza"
-
-#: TutoBoardContent
-msgctxt "TutoBoardContent"
-msgid "Here all of your objects will appear. Click anywhere to add a new item of the current type or click on an existing item on the board to move it. All objects will be attracted to the point of gravity"
-msgstr "Tutaj pojawią się wszytskie twoje obiekty. Będą one przyciągane do środka grawitacji."
-
diff --git a/activities/PhysicsJS.activity/po/template.pot b/activities/PhysicsJS.activity/po/template.pot
deleted file mode 100644
index 97122adac..000000000
--- a/activities/PhysicsJS.activity/po/template.pot
+++ /dev/null
@@ -1,140 +0,0 @@
-#. extracted from ../localize.ini
-#, fuzzy
-msgid ""
-msgstr ""
-"Project-Id-Version: PACKAGE VERSION\n"
-"Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: Sat May 08 2021 22:16:59 GMT+0200 (heure d’été d’Europe centrale)\n"
-"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
-"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
-"Language-Team: LANGUAGE <LL@li.org>\n"
-"MIME-Version: 1.0\n"
-"Content-Type: text/plain; charset=UTF-8\n"
-"Content-Transfer-Encoding: 8bit\n"
-"X-Generator: ini2po 0.0.1\n"
-
-#: TutoPrev
-msgctxt "TutoPrev"
-msgid "Prev"
-msgstr "Prev"
-
-#: TutoNext
-msgctxt "TutoNext"
-msgid "Next"
-msgstr "Next"
-
-#: TutoEnd
-msgctxt "TutoEnd"
-msgid "End"
-msgstr "End"
-
-#: TutoExplainTitle
-msgctxt "TutoExplainTitle"
-msgid "Physics Activity"
-msgstr "Physics Activity"
-
-#: TutoExplainContent
-msgctxt "TutoExplainContent"
-msgid "Welcome into the Physics activity. Physics is a physical world simulator and playground. You can add squares, circles, triangles and see them come to life with forces (think gravity and Newton) and inertia"
-msgstr "Welcome into the Physics activity. Physics is a physical world simulator and playground. You can add squares, circles, triangles and see them come to life with forces (think gravity and Newton) and inertia"
-
-#: TutoCircleTitle
-msgctxt "TutoCircleTitle"
-msgid "Circle"
-msgstr "Circle"
-
-#: TutoCircleContent
-msgctxt "TutoCircleContent"
-msgid "Click here to set circle mode. The next item created will be a circle"
-msgstr "Click here to set circle mode. The next item created will be a circle"
-
-#: TutoBoxTitle
-msgctxt "TutoBoxTitle"
-msgid "Box"
-msgstr "Box"
-
-#: TutoBoxContent
-msgctxt "TutoBoxContent"
-msgid "Click here to set box mode. The next item created will be a box"
-msgstr "Click here to set box mode. The next item created will be a box"
-
-#: TutoTriangleTitle
-msgctxt "TutoTriangleTitle"
-msgid "Triangle"
-msgstr "Triangle"
-
-#: TutoTriangleContent
-msgctxt "TutoTriangleContent"
-msgid "Click here to set triangle mode. The next item created will be a triangle"
-msgstr "Click here to set triangle mode. The next item created will be a triangle"
-
-#: TutoPolygonTitle
-msgctxt "TutoPolygonTitle"
-msgid "Polygon"
-msgstr "Polygon"
-
-#: TutoPolygonContent
-msgctxt "TutoPolygonContent"
-msgid "Click here to set polygon mode. The next item created will be a polygon"
-msgstr "Click here to set polygon mode. The next item created will be a polygon"
-
-#: TutoGravityTitle
-msgctxt "TutoGravityTitle"
-msgid "Gravity direction"
-msgstr "Gravity direction"
-
-#: TutoGravityContent
-msgctxt "TutoGravityContent"
-msgid "Click on this icon to change gravity direction. Each time you click on the button, the gravity is rotated from 45 degrees"
-msgstr "Click on this icon to change gravity direction. Each time you click on the button, the gravity is rotated from 45 degrees"
-
-#: TutoSensorTitle
-msgctxt "TutoSensorTitle"
-msgid "Sensor"
-msgstr "Sensor"
-
-#: TutoSensorContent
-msgctxt "TutoSensorContent"
-msgid "When this icon is active, your device support gravity so you could just turn your device to change the direction of gravity"
-msgstr "When this icon is active, your device support gravity so you could just turn your device to change the direction of gravity"
-
-#: TutoAppleTitle
-msgctxt "TutoAppleTitle"
-msgid "Newton"
-msgstr "Newton"
-
-#: TutoAppleContent
-msgctxt "TutoAppleContent"
-msgid "Click here to turn on the Newton laws. Objects will attract each other. The strength of attraction depends on size of the object"
-msgstr "Click here to turn on the Newton laws. Objects will attract each other. The strength of attraction depends on size of the object"
-
-#: TutoClearTitle
-msgctxt "TutoClearTitle"
-msgid "Remove"
-msgstr "Remove"
-
-#: TutoClearContent
-msgctxt "TutoClearContent"
-msgid "Click here to pass in remove mode. Every object you will click will be deleted"
-msgstr "Click here to pass in remove mode. Every object you will click will be deleted"
-
-#: TutoPauseTitle
-msgctxt "TutoPauseTitle"
-msgid "Pause"
-msgstr "Pause"
-
-#: TutoPauseContent
-msgctxt "TutoPauseContent"
-msgid "Click here to freeze the screen or unfreeze it"
-msgstr "Click here to freeze the screen or unfreeze it"
-
-#: TutoBoardTitle
-msgctxt "TutoBoardTitle"
-msgid "Board"
-msgstr "Board"
-
-#: TutoBoardContent
-msgctxt "TutoBoardContent"
-msgid "Here all of your objects will appear. Click anywhere to add a new item of the current type or click on an existing item on the board to move it. All objects will be attracted to the point of gravity"
-msgstr "Here all of your objects will appear. Click anywhere to add a new item of the current type or click on an existing item on the board to move it. All objects will be attracted to the point of gravity"
-