Player and mob battle Stats implemented

-Players and mobs now have a number of battle-related stats.  These
stats properly save and load along with the mob/player
-'status' command implemented.  'status' shows information about a
player's stats
-player status GUI added to battles.  Now, whenever the room is
displayed, the player's health and PP are displayed as well.
Merge branch 'master' of https://github.com/buckets1337/MotherMUD