Major Progress on QR Code Joining and FB Login

A good save point for FB Login and QR Code progress.  Fully functional
reader, waiting on a working API method, so far as I can tell.

Facebook login works on my end as well, but I’m still waiting for a
working API call as well/ getting the userId from Facebook in a format
I can send to Josh.

Things left to do other than finish these features include: fixing
constraints, and fixing bugs I haven’t found yet.