fixed issues with omniauth and registrations controller tests. removed some debug statements

fixed broken test in controller functional tests

added theme unit tests and started cleanup of remaining existing tests

Added registration controller tests, updated reference to Devise's deprectaed 'bypass' with bypass_sign_in', added some test helper to verify redirects to welcome page (for unauthorized attempts) and projects list page (for authorized). Added language_id back to attr_accessible on User model

Added authentication test and registration controller test. Added troubleshooting info to README. Added generic omniauth id to registration form