Removed function to get Echonest track id and put it in a file in case I need it later. Added that file to .gitignore.
Incorporated  section analysis and section-collapsing fucntions into get_song_data function. Improved comments for api_calls.py and views.py.
Decided to remove section analysis from get_song_data after all, because only final variable values a,b,t,h will go into dbase.
Reduced float values in song data to no more than 3 decimal points. Removed unnecessary columns from db model and inserted some rows into db.
New_song now queries database for spotify_track_uri before calling Echonest.