Spigot Changes

The set of changes which provide core Spigot functionality, which would otherwise be a mess to try and apply individually.

Conflicts:
	src/main/java/net/minecraft/server/BlockSapling.java
	src/main/java/net/minecraft/server/ChunkSection.java
	src/main/java/net/minecraft/server/EntityItem.java
	src/main/java/net/minecraft/server/World.java
	src/main/java/net/minecraft/server/WorldServer.java
	src/main/java/org/bukkit/craftbukkit/CraftServer.java
	src/main/java/org/bukkit/craftbukkit/CraftWorld.java
	src/main/java/org/bukkit/craftbukkit/Spigot.java
	src/main/resources/configurations/bukkit.yml