Taiko drumroll base
Update framework + use EquilateralTriangle in Triangles.
Refactor WorkingBeatmap
DropDown update
Conflicts: osu.Game.Modes.Taiko/osu.Game.Modes.Taiko.csproj
Fix menu cursor size not sticking on startup.
Also tidied up bindables.
Fix checkbox dependency in LoginOptions
Spinner fix
Fix usages of CircularContainer in line with framework changes.
Gets ArchiveReader out of WorkingBeatmap and delegates extracting stuff from it to subclasses. Should enable us to make an OnlineWorkingBeatmap or so.