Fix selection on entry to song select.
Replaces such usage with more sensible settings, like changing the position or size.
When file is in use, we expect it to presist removal, in other words, fail to delete.
Also only shows sets with beatmaps for current play mode.
# Conflicts: # osu.Desktop.VisualTests/osu.Desktop.VisualTests.csproj # osu.Game/Screens/Select/PlaySongSelect.cs # osu.Game/osu.Game.csproj
# Conflicts: # osu.Desktop.VisualTests/osu.Desktop.VisualTests.csproj # osu.Game/Overlays/Pause/PauseProgressBar.cs # osu.Game/Overlays/Pause/PauseProgressGraph.cs # osu.Game/osu.Game.csproj
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