Minor fixes

I fixed the issue with the old prefab on the 'area01' scene.
I fixed a problem in the MapEvent. They (enemy/ally) was getting the
player's character script instead of their own.
Resource System Rewrite

I refactored the MapEvent to be more efficient by moving the player and
its scripts out of update and into the class.
I rewrote how resources are handled somewhat based upon the Items class.
I modified the previous resource tests to fit the new resource system.
Merge pull request #12 from drobbs/master

Resource System Rewrite