Remove unused glade UI file. Added CSS classes to various components. Fix some alignment issues. Renamed our albums_strip to favorites_list.
Implement recursive file parsing in KotoIndexedAlbum with the intent of using it for "discs" / CD, useful for albums like Foo Fighters: In Your Honor that have 2 or more CDs. Still need to work on refining this further.
Add stub function in our album view for a planned separation of the track listing so we can do it based on discs and other depth-of-3 sub-folders.
Implemented KotoIndexedArtist as well as KotoIndexedAlbum, including moving the file indexing capabilities into the KotoIndexedAlbum (subject to change).
Added g_debug messages instead of using g_message for debug purposes. Re-introduced Koto Utils with new koto_utils_get_filename_without_extension, since that is used to get the extensionless file name across both album fetching and base file name fetching.
