Adds CatRentalRequest#pending?.
Fixes typo in routes.rb. Adds Links and approve / deny buttons to cat show view. Refactors CatRentalRequest#pending?. Adds approve / deny CatRentalRequestController actions.
Creates User model. Adds #reset_session_token!, #passowrd=, #is_password?, ::find_by_credentials etc.
Finishes project by adding login / logout capabilities and the ability to create new users.