facebook registration incomplete

[sethwoodworth]

Facebook based registration is incomplete.

• a fb user's school doesn't get added to their profile
• if the school doesn't exist, the school should be added to the site
• the user should be logged in after registration and taken to the profile page

Models

• school.facebook_id doesn't match the BigInt that fb returns

[sethwoodworth]

019eb4f and the immediately following commits should:

• create new schools on fb login
• add schools to user profiles
• log the user on post reg

This commit also starts building the framework for user images via facebook or gravatar. This commit also requires a db migration.

[sethwoodworth]

I figured out what the issue was with socialauth_begin in our url tags and I consider this implemented