UC-77 Show an email entry box when FB does not supply it

If the user unchecks the 'email' box when registering w/ our Facebook app, we won't get an email address for them from Facebook.  In that case we need to collect it from them before continuing.

https://wikia-inc.atlassian.net/browse/UC-77
You should be able to get rid of this init function all together since there's not longer any new functionality. It will just inherit from it's superclass. (Also, the comment is out of date now).