SongDataAdapter and DatabaseHelper Upgrades
- Updated DatabaseHelper with new create statements and variables that
use the MediaStore
- Added a View to the DatabaseHelper to get audio information
- DataSources to use new static DatabaseHelper variables
- Fixed entityExists() to correctly close the cursor after finding an
entity
- Updated Album class to remove the artistId variable
- Updated Song class to remove unused constructor
- Added SongDataAdapter to display list of songs, and updated
MainActivity to include this with a new Fragment