Adds 'native' content deleting (not via the legacy objects) and updates the mock data to support this in the Client proj.
start looking at tree service to remove a node but realized that our initial app tree loading isn't correct, we need to have a true root node but currently we dont.
Updated the tree structure to support the root section node. Now we actually get a menu listing for section roots when there is only one tree (i.e. media/content).