ENYO-3088: The Error signe-in Pop-up shows only if the Phonegap Build service is enabled.

How to test: 
1 - Clear the Ares authentification cookie (in google chrome: Ctrl + shift +J -> Resources -> Local Storage -> "http:127.0.0.1:9009" -> delete "com.enyojs.ares.services.phonegap").
2 - Open the Pop-up "Project Properties" (Ares -> Edit).
3 - If the check box "Phonegap Build" is enabled then the Sign-In Error Pop-up must appears
4 - If the check box "Phonegap Build" is disabled then the Sign-In Error Pop-up mustn't  appears

Tested on Chrome Canary (Windows 7)
Enyo-DCO-1.1-Signed-off-by: Rafik Adiche mahmoud-rafik.adiche@hp.com