Add Ban Methods to Player Objects

Allows a more logical API for banning players.

player.banPlayer("Breaking the rules");

Spigot-Server-Patches/Disable-explosion-knockback.patch

@@ -19,7 +19,7 @@ index b0b3033e7..afc13e851 100644
 +    }
  }
 diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java
-index 756590ac0..05d1fc10d 100644
+index d15cfdd76..2aaeac324 100644
 --- a/src/main/java/net/minecraft/server/EntityLiving.java
 +++ b/src/main/java/net/minecraft/server/EntityLiving.java
 @@ -0,0 +0,0 @@ public abstract class EntityLiving extends Entity {