LPS-30624 Page permissions in tree

Hey Julio,

Can you take a look at these methods?

```java
		List<Layout> layouts = LayoutLocalServiceUtil.getLayouts(
			groupId, privateLayout, parentLayoutId, incomplete,
			QueryUtil.ALL_POS, QueryUtil.ALL_POS)
````

The incomplete parameter seems that it's not used at all.

It was added on this ticket http://issues.liferay.com/browse/LPS-17669 but it seems that the it's not considered in the logic.