Perf boost for banned logout.

Banned players no longer have their data saved on logout.

src/me/ryanhamshire/GriefPrevention/PlayerEventHandler.java

@@ -604,7 +604,10 @@ class PlayerEventHandler implements Listener
 		}
 		
 		//make sure his data is all saved - he might have accrued some claim blocks while playing that were not saved immediately
+		if(!player.isBanned())
+		{
 		    this.dataStore.savePlayerData(player.getUniqueId(), playerData);
+		}
 		
 		this.onPlayerDisconnect(event.getPlayer(), event.getQuitMessage());
 	}