Revert "Remove metrics now to avoid issues later on. TODO: Make own metrics."

This reverts commit 70d2a558bc.

By: md_5 <md_5@live.com.au>

CraftBukkit-Patches/0064-Add-Getter-for-Entity-Invulnerability.patch

@@ -1,25 +0,0 @@
-From eda99a5cfa88916585dfb3ca301f7bdb2dfd0894 Mon Sep 17 00:00:00 2001
-From: DerFlash <bte@freenet.de>
-Date: Sat, 3 Aug 2013 19:53:48 +1000
-Subject: [PATCH] Add Getter for Entity Invulnerability
-
-
-diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
-index 4f4b84f..65a77dc 100644
---- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
-+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
-@@ -402,6 +402,11 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
-     // Spigot start
-     private final Spigot spigot = new Spigot()
-     {
-+        @Override
-+        public boolean isInvulnerable()
-+        {
-+            return getHandle().isInvulnerable();
-+        }
-     };
- 
-     public Spigot spigot()
--- 
-1.8.1.2
-