Remove usages of negative Margin / Padding
Fix selection on entry to song select.
Replaces such usage with more sensible settings, like changing the position or size.
Also only shows sets with beatmaps for current play mode.
Added basic sorting functionality
Popup dialog
The triggered bool is not even necessary because input is no longer handled after the OverlayContainer's state is set to hidden.
Flowcontainer refactor
# Conflicts: # osu-framework # osu.Game/Beatmaps/Drawables/BeatmapGroup.cs
KeyCounter visibility
Disable mousewheel while playing
Add exponential fall-off of triangles' alpha values.
Warning fixes
EditorConfig naming style settings for vs2017.