Fixed many slime bugs.
- Fixed slime hurt/death sound
- Added slime spawning on death.
- Fixed the max health.
- Fixed the attack damage.
- Little slimes should not attack players.
Fixed issues relating to saplings and leaves

- Removed cBlockInfo::RequiresSpecialTool
* Fixes #1195
* Fixes #1201
Split into more lines.
Added a extra wall sign handler.
Fixes #1119
Fixed creative players not being able to drink

Fixes #1215
MCServer supports Minecraft v1.7.10
Monster fixes

* Fixes #1203
* Fixes #627
Slime sizes are 1, 2 or 4 and not 1, 2 or 3.
Removed cBlockSignPostHandler descend.
Normalized code style for both sign handlers.
Merge branch 'Sign'
Added RemoveItem() function to the player inventory.
Fixed slime-related comments.
Merge branch 'Entities'
Clarified RemoveItem()'s comments.
APIDump: Documented RemoveItem().
Debuggers: Optimized and commented the /rmitem handler.
Merge branch 'Inventory2'
Mobs/CMakeLists.txt: Replaced glob with list of files
Entities/CMakeLists.txt: Replaced glob with list of files