[#66][s]: remove more (now) obsolete stuff from frontend.
[#64][s]: front page open counts now run off backend and template (rathe than js).
[#66,catalogs][s]: load catalogs into the model.

This took *way* longer than it should because of yet more obscure issues in csv library parsing gdocs csv (something to do with just one field and unable to establish exactly what the issue was but a minor edit in the gdoc fixed it)
[#64,frontpage][s]: frontpage catalog counts now run off backend and frontpage backend only now.