Potion to Prefab

Sorry I'm in a rush, the potion can be picked up if the player is
nearby with spacebar.  I didn't have time to hook it up with status to
actually heal, it's my understanding that calling the heal spell would
be the easiest way to do it.
Merge pull request #183 from verbiage/master

Potion to Prefab
Merge pull request #184 from EnacheB/master

Hypothetical performance increases
Fixed bug I made