Customizable script to allow players to gain honor from NPC kills

After searching the forums and finding some abandoned core mods that attempted to give honor from guards, I decided to design it as a script instead.

This seems like a big patch but it's really not too bad. Being a script it's relatively compartmentalized from the rest of the core (it does add a lot of CONF options though).

Forum [post](http://www.trinitycore.org/f/topic/10273-complete-honor-from-npcs-updated-2014-07-27/) (with more details and screenshot)
CHAT_MSG_SYSTEM is yellow by default - sending MOTD should have another effect (i think it also is permanently displayed in help ui on that list of "hot issues" that no longer works because blizzard shut it down)