Add support for ScorePrefix and ScoreOverlap values in legacy skins
Has been replaced by the four new skinnable tests for each component.
Add legacy skinning support for accuracy display
Add support for bottom-anchored hit error display
Move ISampleDisabler implementation to Player and FrameStabilityContainer
Using an abstract property was awkward for this as it is being consumed in the underlying constructor but could not be dynamically set in time from a derived class.