Fix Craft Entity constructors and toStrings.

Also, standardise getHandle and clean up in general.
getHandle is now using the 'entity' member variable instead of
super.getHandle, as this reduces the number of chained calls needed.

src/main/java/org/bukkit/craftbukkit/entity/CraftBlaze.java

@@ -1,11 +1,22 @@
 package org.bukkit.craftbukkit.entity;
 
+import net.minecraft.server.EntityBlaze;
 import net.minecraft.server.EntityMonster;
 import org.bukkit.craftbukkit.CraftServer;
 import org.bukkit.entity.Blaze;
 
 public class CraftBlaze extends CraftMonster implements Blaze {
-    public CraftBlaze(CraftServer server, EntityMonster entity) {
+    public CraftBlaze(CraftServer server, EntityBlaze entity) {
         super(server, entity);
     }
+
+    @Override
+    public EntityBlaze getHandle() {
+        return (EntityBlaze) entity;
+    }
+
+    @Override
+    public String toString() {
+        return "CraftBlaze";
+    }
 }