Add reviews as a resource of movies
Generate reviews controller
Add new and create, and filter and params methods for reviews controller
Create a login splash screen, and redefine routes for auth_path vs login_path
Redirect login in navbar to login splash.
Create a form for new reviews.
Dry out rating selection using the constant from the Movie model.
Redirect after review creation.
Show reviews for a movie if it has any
Add links for creating new reviews
Create partial for movie reviews
Merge branch 'ch-7.5-7.10'