Update Gemfile with latest gem versions.
Fill in logic for creating sessions after authenticating with Persona.
Add routes for users to sign out, though no matching controller method exists yet.
Removed permissions model and changed name validation
Remove schema.rb and add it to the ignore list.
Update the main site layout to support displaying Rails flash messages.
After signing in, render the home page and display a flash message.
Remove an unnecessary Javascript include in the main site layout.
Merge branch 'master' into login-sessions-devel

Conflicts:
	app/models/user.rb
	db/seeds.rb
Update the ffi gem to the lastest version.
When logging in, match the supplied email address to an existing account ignoring case.
Make email addresses unique per User model.
Store tokens in the Users model to automatically sign-in returning users.
Implement persistent user sessions using cookies.
Update gems to latest versions.
Add integration tests for the login process.
Update routes to support session handling.
Update SessionsController and associated helpers to get closer to a functioning login system.
Add unit tests for the User model.
Fix a small typo in a SessionsController integration test.