preparing for scrolls: separate actor from action source location, remove duplicate code related to attacks

also working on making meteor storm not scroll annoyingly
Fixed spurious error message on kills
removed accidentally-copied thing
Fixed training screen orbs in 1.12
more work separating actor from action source
Fixed Zombie Mastery not working in 1.12.
Made Ogre Fury not raise the target's level (which allowed several exploits)
Fixed not giving kill XP when Zombie Mastery reanimates the victim