Chunk Overhaul - Bug Fixes

The chunk thing is now 100% functional because I just scrapped the
chunk idea entirely!
TerrainGen Changes and Gravity Fixes

-Fixed terrain generation to have indestructable blocks appear at the
bottom of the map only.
- Slightly modified block generation statistics
- Fixed gravity function on crates
- Added new isPlayerOnMap function designed to suit the needs of the
unusually wide player.