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/CraftLightningStrike.java

@@ -9,12 +9,17 @@ public class CraftLightningStrike extends CraftEntity implements LightningStrike
         super(server, entity);
     }
 
-    @Override
-    public EntityWeatherStorm getHandle() {
-        return (EntityWeatherStorm) super.getHandle();
-    }
-
     public boolean isEffect() {
         return ((EntityWeatherStorm) super.getHandle()).isEffect;
     }
+
+    @Override
+    public EntityWeatherStorm getHandle() {
+        return (EntityWeatherStorm) entity;
+    }
+
+    @Override
+    public String toString() {
+        return "CraftLightningStrik";
+    }
 }