Ember-stack-builder-frontend transfered functionality

This is a minor release that incorporates several changes that were implemented in the standalone ember-stack-buider-frontend but were not yet in the ember-stack-builder-engine, also next to several minor bug fixes:

• docker-compose cursor tracking.
• added support for tabulation in the textarea.
• models & mixins for the swarm-ui. @lordblendi
• multiple design & frontend fixes. @lordblendi