Story (A paragraph or two describing what happens)
Admin wants to rearrange the hierarchy of communities/collections via the Admin UI.
Admin wants to change the parent child relationship of a community/sub-community or collection. New parent could be system (new top-level community), or a new/different community/sub-community.
Admin wants to re-index after change via Admin UI
Admin wants the new parent/child relationship to reconcile with statistics logging/reporting