Fixed the HierarchyConverter to produce a consistency result;

https://www.pivotaltracker.com/s/projects/684825/stories/71140570
I think the HeirarchyConverter is in good shade to produce a consistency result for all path segments now. For the path that are shorter that the default level of the auto hierarchy, it will return it intact, and a slash is appended to the front of the result to make it consistent with the current UUIDPathMinter pattern at this time.