Fix wrong Container.getBounds with child container

Author: EliotGodard

src/gameobjects/container/Container.js

@@ -384,12 +384,20 @@ var Container = new Class({
 
         output.setTo(this.x, this.y, 0, 0);
 
+        if (this.parentContainer) {
+            var parentMatrix = this.parentContainer.getBoundsTransformMatrix();
+            var transformedPosition = parentMatrix.transformPoint(this.x, this.y);
+            output.setTo(transformedPosition.x, transformedPosition.y, 0, 0);
+        }
+
         if (this.list.length > 0)
         {
             var children = this.list;
             var tempRect = new Rectangle();
 
-            for (var i = 0; i < children.length; i++)
+            var firstChildBounds = children[0].getBounds();
+            output.setTo(firstChildBounds.x, firstChildBounds.y, firstChildBounds.width, firstChildBounds.height);
+            for (var i = 1; i < children.length; i++)
             {
                 var entry = children[i];