Issue #15: Got the sign-in button to appear and ask the user for
authorization.  There appears to be no memory of the sign-in and the new
method in the users controller is not being called.
Issue #15: Added FaceBook integration.  The link on the main page causes
an error in FaceBook, but I think it is an issue with FaceBook setup.
Corrected the names for issue #15.
Got Facebook authentication to file for issue #15. Still need to remove
Google+ code, and fix up sign-in.
Sign in and Sign out now work for issue #15.  Things still TO DO:

1) Make sure that creating a user works (I think it crashes).
2) Remove all that Google+ code.
3) Associate users and politicians.