They can now only be instantiated from BeatmapDatabase and are abstract (to avoid misuse).
- Applies to Slider Ticks and start circle. repeat/endpoints still need addressing. - Removed SliderTicksLayer abstraction for now.
# Conflicts: # osu.Game/Graphics/UserInterface/BackButton.cs # osu.Game/Screens/Play/Player.cs # osu.Game/osu.Game.csproj
Fix some nullrefs when running visualtests with no maps loaded.