Shifting the old gats busts around
Added more comprehensive priority options and removed the fallback options.
3 sets of buttons to select priority of the busts you want to see; Off, Cheshire, Gats and Old Gats. Each set is a priority; the bust displayed will always be from the highest enabled priority if available, falling back to the lower priorities as required. Unless the bust is one of the overrides defined in the OverrideBusts class.