Add the `serve_static_assets` gem for Heroku.
Added datepicker
Add a `key` field to Song.
Allow removing songs from a list
Allow editing a song list from the show page.
Minor fixes
add a theme. and css fixes
Select a song's key from a fixed list of values
Services
Colorize navbar
Colors for index
Fix song index
Show the lists a song is in
style new song list page
Add flashes
More fixes
more fixes
Remove edit link from song list show page
Link up songs in song list show
Responsify