Implemented edit user functionality, updated tests.
Implemented first pass at user update action.
Saving edited user data is now saved properly and the user is redirected back to the show page. Updated tests.
Now, only signed in users can access the edit and update resources. Also updated tests.
Actual update of authorization tests (didn't save this file on last commit).
Updated app to prevent users from editing/updating other user pages.
Implemented friendly forwarding, updated tests.
Implemented the user index view. Updated controller and tests.