Bug 892519 - Add integration tests for notification function.

Hi James,

I write two tests for the notification function.
But the 'should have a notification in other folder' test is never passed.
You could see the code in https://github.com/evanxd/gaia/compare/jrburke:bug892519-email-bg-notify...jrburke-bug-892519?expand=1#L1R35.

I'm checking on this.
Do you have any idea?
Thanks. :)

http://bugzil.la/892519