Clean up and fix bugs

Everything appears to run correctly and it is more abstracted. Next is
going to abstract out most of LeadTurtleTowns logic, but now it finishes
with the house and cobble generator built.

* LeadTurtleTown use the new cobble object to avoid naming collisions

* buildFirstHouse totally rewrite to a much cleaner version with
constants instead of random hardcoded numbers

* getMoarCobblestone use cobble object

* houseUtils Add comments, use tables for indexes of building/breaking
blocks. Overall much better.