Generalized the inventory to be a part of the Fighter class. This allows monsters to have and use items. Yay.  Still need to generalize all of the casting functions so they work for both players and monsters.  Also, need to add better monster logic for use of items.
Added a few more STATE variables in data.py.  Need to clean these all up at some point
Added mobitems dict in entitydata.py to seed starting items for monsters.