validates presence of email
validates uniqueness of user email
add photo to test photo upload and editing
add email, password and password_confirmation to safe params in the controller
remove the "create new user link" on the page
add user signup link to the application layout
edit form to include email, password and password_confirmation fields
create sessions to handle user authentication
edit application controller to include authentication
update application layout to include authentication
edit users controller to allow for authentication sessions
edit routes to make shorter urls for the authentication process
add authorize method to application controller
add a before_action method for authorize
edit a spelling typo
edit the users controller
edit the controller to include jquery for logging in
add html tags for the user session conditional
create a login page
create form partial for login session