The data argument was being treated specially, but that was just
because we didn't have **kwargs support. Now we do. There are
two uses of data=, one we convert to kwargs, the other was actually
unused, so remove it completely.
* new env file to run integration tests with mongo backend
- needs askbot to get db in the right state
- needs wiki to load pages successfully
- not using migrations to make it run faster
* import test courses, check that each page loads without erroring.
* fix NonePointerException in index view to make tests pass
* misc formatting cleanups
