Don't store duplicate tracks
Use promise library to download tracks and handle
errors more gracefully.
Fix Audio service to handle stopping when the 
player is loading.
Create genre UIDs for performance and storage
efficiency
When a genre label is clicked, highlight the
associated tracks
Updating working and fix spelling mistake
Normalize genres before storing
Give create menu well a height of 0 and resize it 
to fit the page rather than shorten it. Prevents the
side scrollbar from flickering.
Pause track matching when the customize menu is left
Show user when no Pandora tracks are found and when
no Spotify matches are made.
Add support from random Pandora IDs
Add ability to save raw Pandora data
When new tracks are matched, highlight the new ones
that match the clicked genre label.
Use Puma as the web server.