ENYO- 2788: Add the widget Build status to Phonegap Build panel

Link to the JIRA ticket : https://enyojs.atlassian.net/browse/ENYO-2788

Ready for review.

Tested on Chrome, FireFox, (Windows 7)
Enyo-DCO-1.1-Signed-off-by: Rafik Adiche mahmoud-rafik.adiche@hp.com