ENYO-3142: switch project context when switching file with tab
ENYO-3142: Merge remote-tracking branch 'origin/master' into ENYO-3142

Conflicts:
	ares/source/Ares.js
	ares/source/DocumentToolbar.js
ENYO-3142: pass along project when requesting to close a file
Merge pull request #609 from enyojs/ENYO-3142

ENYO-3142: switch project context when switching file with tab