First step of new UI :
- bacground on body
- toolbar at bottom
- new tray
change top border-color of noviusos panel
Appstab: launchers are draggable, not only sortable
Merge Dubrovka
Desktop, launcher create by js
Bugfix on tray width
Bugfix on fullscreen for webkit
Improve new UI for testing
Bugfix in production, contextmenu not defined
Bugfix : background disappear in fullscreen on chrome and opera
Merge feature/new_ui