Moved menu for tracks into module TrackMenu.
Fixed a problem with empty track lists.
Moved menu for albums into module AlbumMenu.
Module AlbumMenu created.
Moved menu for artists into module ArtistMenu.
Spaces to tabs.
Merge commit '41999f7972c379ce285aba15dc275d02d1be0312' into feature/improve-sorting
Merge commit '7ca083ec06207e699ee5093d37bcd8f6e8f531ae' into feature/improve-sorting
Merge commit 'e6b8d2ab45a8c9cd13e40379d64b72485eb8ca08' into feature/improve-sorting
Merge commit 'f8b7f5f2b9896d59350af957f7c43e9f8a28b0b2' into feature/improve-sorting
Merge commit '2559ceb716158dcfe3c7912240483d10b84d56e3' into feature/improve-sorting
Merge commit '4ca58e564c66da14cfdee18a67e60170a0bab1bd' into feature/improve-sorting
Configurable album sorting added.
Also sort tracks by the selected sort album method.
Added sorting by album name.