Add confirmation when leaving page with modifications unchanged

[fpiraneo]

Feature description

When I create a new host/server and after inserting all the data I have to click on the blue checkmark in the upper right corner of the page; if I don’t do that, the page is closed and all my modifications lost; a confirmation popup that I want to leave the page without saving is welcome.

Final compliments

Really congratulation for your fantastic job! Unfortunately I’m not a Javascript lover/guru so I cannot help but really appreciate your effort! (of course I bought the Pro release! ;-))

[isontheline]

Really congratulation for your fantastic job! Unfortunately I’m not a Javascript lover/guru so I cannot help but really appreciate your effort! (of course I bought the Pro release! ;-))

Thank you so much 🙏

a confirmation popup that I want to leave the page without saving is welcome.

I will improve WebSSH in order to add this confirmation

[isontheline]

I'm linking #1097 to this one