Remove unavailable items from playlist
Automatic merge of translations from Transifex (https://www.transifex.com/projects/p/clementine/resource/clementineplayer)
A quick patch to have the library ignore all articles when sorting.
Ran make format.
Merge pull request #4502 from gavinhoward/library_sort

Ignore Articles for Library Sorting
Fix for m3u parser bug when an artist's name had a hyphen.
Merge pull request #4506 from gavinhoward/hyphen-fix

Fix M3U Hyphen Parse Bug
Merge pull request #4499 from ppkt/remove_dead_items

Remove unavailable items from playlist
Automatic merge of translations from Transifex (https://www.transifex.com/projects/p/clementine/resource/clementineplayer)
Added disc to the groupby interface. Raplced groupby_performer to groupby_disc