give homepage-link unique id
create navbar_pages_spec.rb
move search bar and genre selector tests from welcome_pages_spec to navbar_pages_spec
create tests for navbar links when not signed in
create edit, update, and destroy routes for comments
create edit comment controller action
create link to edit comment
create form for editing a comment
create script for replacing comment body with edit_comment_form
hide edit and reply links when edit.js is called
create update action for comments_controller
create edited_star method
apply edited_star_method