Molly, Certer and Maze

Added Molly, Certer and Maze. 
Feel free to ignore Maze as we did discuss better ways of doing it earlier, but I haven't got round to looking into it yet.
Molly is loading definitions from the cache as requested by logical, it hasn't been tested but was working fine previously with hard coded definitions.
Certer is tested and working fine.

Also fixed a big with the walkTileOnScreen method and changed interact options in the ExpRewardClaimer as it was incorrect.