Add ability to change the owning collection of items and workspaceitems

To solve the Bozen request, I added another php tool to do this. I think they could have asked us to move the collections to a new parent community. But, I have done the work to have the items move to a different community. 

For their case, item.owning_collection, collection2item, and workspaceitem needed to be touched. Perhaps for other re-uses of this code, be sure to check their DB content. Perhaps workflowitem...