Kfsti 668

This is the initial PR  for applying the KC CGB overlay project to KC 6.0. It should obviously be reviewed closely.
Dunno why I didn't see this before, but was this originally in SponsorFormsMaintDocRule? Or SponsorMaintDocRule? I either case it almost certainly should be in SponsorMaintDocRule. The maint doc here is for sponsorforms. Sorry if that was something I did. Too many late nights working on this I guess.