Mod select
Doesn't interact well with dialog popups. May add back later with complementing logic.
# Conflicts: # osu.Desktop.VisualTests/osu.Desktop.VisualTests.csproj # osu.Game/Screens/Select/PlaySongSelect.cs # osu.Game/osu.Game.csproj
# Conflicts: # osu-framework # osu.Game/Beatmaps/Drawables/BeatmapGroup.cs
They can now only be instantiated from BeatmapDatabase and are abstract (to avoid misuse).