Package Replication Status Updater - NodeType hierarchy support

Fixed Issue #355 

DAM Folders were not being updated during Package Activation because the replication state must be tracked on the `[sling:OrderedFolder]/jcr:content` node which is of type `nt:unstructured`, and `nt:unstructured` is not (and should not) be a candidate type as its far too broad.

Added support to to the "allowed" `node-types` to support a nodeType hierarchy. For example

`node-types=[sling:OrderedFolder/nt:unstructured]`

This will accept any resource that is of type `nt:unstructured` and whose parent is of node type `sling:OrderedFolder`

I've added `sling:OrderedFolder/nt:unstructured` to the default node types config.

![aem_assets___products](https://cloud.githubusercontent.com/assets/1451868/5054714/4126d9e6-6c26-11e4-8134-cc3e5dcd6a86.png)

/cc @ncordeiro