This seems to be built on top of Mezzanine--in fact, the word "Mezzanine" appears in the upper left-hand corner in the admin in the demo.

Is this some kind of fork of Mezzanine, or is there something else going on here? Is this meant to run on top of Mezzanine? In spite of similarity in the admin, reading through the code quickly doesn't seem to reveal any clues (or much of any similarity at all with the other project).