Fixed undead burning

(c'mon xoft, test ya code :P)
Added wood directions

+ Added wood directions
Snow now supports meta values

Fixes #98
Multiple fixes [SEE DESC]

- Removed two random block handling files in the item handling section
that didn't do anything. (One was an attempt at making slabs work, but
failed to realise that the coords would have to be the block CLICKED,
and another was just a random empty file for handling wooden planks.)
* Fixed placing repeater blocks not directioning properly
* Fixed wood directions breaking plank metadata
Implemented redstone comparators

They can be placed and toggled, but stills needs proper redstone support
Added moar mobs!

+ Added dragons
+ Added golems
+ Added giants
+ Added horses
+ Added some missing items
+ Added missing spawn egg metas
Fixed pickups
Fixed new monster aggressiveness issue
Implemented xoft's suggestions
Fixed pickup block spawning
Changed to SetBlockMeta
Increase piston delay to a second

Another fix for #57
Removed OnDigging for Redstone devices
Added button placement handler

Also removed an unneeded variable in the stair handler
Changed a comment

Was a remnant of my TypeType minecarts :D
Removed some unneeded includes
Merge pull request #2 from tigerw/bugfixes

Bugfixes