CombatService - Added method for drain heals

run() in the combat ability scripts now take the damage done post
mitigation etc as an argument instead of null.
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Armor - Protection is added to character sheet
Merge pull request #302 from Ziggeh/master

CombatService - Added method for drain heals