Added new migration for authorization tokens
Added new file for debuggin in test enviroment.
Minor changes.
Added new cookie information to session controller.

With this new cookie implementation each user on sign up gets a set of
new auth_tokens that are generated and unique to each user.

we updated the view to allow users to select "remember me" and we updated the test
so that all controller tests now generate a user auth token after the user or admin
sign ups.

All tests are passing.