ENYO-2788: Correct a display bug on platform icon leading them to desape...

...ar if they are displayed for the first time with the status null.

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