Fix docs generation properly.
My previous fix for docs generation didn't actually work. It just

appeared to, due to my test conditions.
We now set RUNNING_TEST = True in settings, which is where it should

go. The Makefile no longer has to set it.
make clean also now removes the database, and this is called when

fixtures change.

Tested docs generation with the following conditions:
1) With no existing database

2) With a database and no fixture updates.

3) With a database and fixture updates.