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.

I'm sorry, this statement is wrong.

We want this test to always run, so that all the code is tested, even the one that is behind the flag. That's why in all the tests that test for email behavior you need to set the flag to "true", so that you can test the code behavior in that case. The goal of unit testing is to test as many code branches as possible.

Hope this clarifies what we need here.