Fix sliders not moving with stacking changes
Make AccentColour a bindable Co-authored-by: Dan Balasescu <smoogipoo@smgi.me>
# Conflicts: # osu.Game.Rulesets.Mania/UI/ManiaRulesetContainer.cs # osu.Game.Rulesets.Osu.Tests/TestCaseSlider.cs
also OsuSetting to GameSetting