add link to rides_path on users show
fix request a ride feature - refactor login, remove optional attributes, add title step
display link to edit ride if there's a current_user and the ride was posted by them, rides nearby does not display if there aren't any
add test helper, login_user, for creating and signing in a user
update messaging feature so it has a logged in user and is creating a ride with appropriate attributes
remove ride unit test testing presence of to and add one for testing presence of title
update ride fixtures - add title, remove to
add helper method login_user to setup in rides/messages controller test