UC-53 Create a new module for Facebook v2+

Update the Facebook PHP and JS SDK's to the new version and create a new extension to implement the FB connect functionality through them.

https://wikia-inc.atlassian.net/browse/UC-53
The method calls within the ```try/catch``` block throw a variety of exceptions.  Since I'm handling them all the same way (logging the failure) I'm catching with the most generic exception possible.  I do think I'll update that logging to be the new Wikia logger though ...