Bug 974867 - [MMS]Auto suggestion for email address r=Julien

https://bugzilla.mozilla.org/show_bug.cgi?id=974867
If Settings.supportEmailRecipient is "false", this test doesn't need to run.
So, I I have implemented like this.
I'm going to change Settings.supportEmailRecipient to "MockSettings.supportEmailRecipient".
And, how should I  modify any other?
Could you tell me in detai?