Fixes and stuff.

- Added the ability to place blocks next to the turret if they do not do
anything.
- Added endimonium as a fuel with a burn time of 2^32 -1
- Moved some stuffz to the core.
- Deleted un-used stuff.
- Improved the intelligence of the turret. Now checks if the turret can
see the enemy and the enemy can see the turret before shooting, turrets
don't shoot endermen, turrets don't shoot creepers if they are too close
and could endanger the turret itself.
- Turrets can now be disabled with a redstone signal.
- Intelligent shooting on turrets has now been added to the nbt data for
the tile, so it remembers now.
- Right clicking the turret without anything in your hand prints the
installed upgrades.
- Updated language files.