Minor Changes

Fixed indentation and removed pointless annotations.
Minor Change

Changed some spacing
Fixed Indentation in TileEntityRift

Fixed indentation in TileEntityRift
Minor Change to Rifts

Changed rifts to using world.destroyBlock() instead of
world.setBlockToAir(). That has the advantage of causing block
destruction animations and sound effects instead of blocks vanishing
silently.
Improvements to TileEntityRift

Cleaned up the code in TileEntityRift. Fixed up some spacing and changed
as many functions and fields to private as possible. Added a performance
improvement by doing the random roll for Enderman spawning before
searching for nearby Endermen.
More Rift Fixes

--Changed BlockRift to use ITileEntityProvider instead of BlockContainer
--Reorganized some of the code in TileEntityRift to improve performance
and readability
Fixed Dungeons for MC 1.6

Fixed dungeons that were broken by changes in MC 1.6
Fixed Bug in DungeonSchematic

Fixed a bug in DungeonSchematic that would cause a mysterious
NullPointerException if a dungeon schematic was missing it's entrance
door.
Merge pull request #124 from SenseiKiwi/master

Various Fixes