[Dev] About supporting Phillip's proposal

[Andi Vajda]

In order to support Phillip's Python Schema API, several features had to be 
added to the repository which are further described on the chandlerdb blog:

   - support for null repository views
     http://blogs.osafoundation.org/chandlerdb/2005/04/a_null_reposito.html

   - support for importing items from one view into another, within the same
     repository or not
     http://blogs.osafoundation.org/chandlerdb/2005/04/importing_items.html

Andi..