add more btn w/ menu dropdown to edit song
create #soulSifter div for ease of theming purposes
add tonicKey to song (transitioning from tonicKeys set)
song-edit binding & ux w/ abstact-action-page
make ID vectors accessible & improved searching for these relationships
function rename
removed sync method. was used when loading from RE data, but no longer do that, and it confuses the code plus adds unnecessary db queries.
rm Song::findSongsByStyle