ENYO-3133: Change the attribute used for the description xml tag in conf...

...ig.xml from "title" to "description".

Link to JIRA ticket : https://enyojs.atlassian.net/browse/ENYO-3133

Tested on Chrome Canary (Windows 7)
Enyo-DCO-1.1-Signed-off-by: Rafik Adiche mahmoud-rafik.adiche@hp.com