ENYO-2291: collapse two error popups into one

Enyo-DCO-1.1-Signed-off-by: Francois-Xavier KOWALSKI <francois-xavier.kowalski@hp.com>
ENYO-2291: turn button-based Projects management into menus

- This leaves room for coming _Install_, _Run_ and _Debug_ operations.

Enyo-DCO-1.1-Signed-off-by: Francois-Xavier KOWALSKI <francois-xavier.kowalski@hp.com>
Merge branch 'master' of github.com:enyojs/ares-project into ENYO-2291
Merge branch 'master' of github.com:enyojs/ares-project into ENYO-2291
ENYO-2291: code review comments

Enyo-DCO-1.1-Signed-off-by: Francois-Xavier KOWALSKI <francois-xavier.kowalski@hp.com>
Merge pull request #274 from enyojs/ENYO-2291

ENYO-2291: turn button-based Projects management into menus