Add a way to undo polymorph

[atamusvaleo]

A reminder that cluwnes, regardless of origin, are fair game for being openly murdered by literally anyone, including borgs and the AI.

Yesterday, I was a doctor trying desperately to savee the cluwnes while security sstematically dragged them into the brig and executed them. A high-tension situation that culminated in an explosion, which maimed the security force and killed what few cluwnes remained alive. So much death. So much horror. What fun!