Our dependency checks (which print errors and warnings when running the

devserver) weren't working, because of the changes in how the settings module

is defined. We used to check whether the settings module was defined in the

environment, but when we switched to Django 1.5, we started inserting that into

the environment ourselves. I've added a flag to check whether or not we're in a

subprocess.

Ran the devserver and saw it run the dependency checks (but only once).