The docs configuration files previously had to account
for the fact that lms/djangoapps, cms/djangoapps, and
common/djangoapps were hacked into sys.path. As of ~Lilac,
this is no longer the case.
Unrelated cleanup: devstack_docker and devstack
are now aliases, so we can simplify a conditional import
in docs_settings.py
API docs generation was being blocked by missing values in the doc
settings. We wanted to update the swagger.yml to get the toggle state
("/toggles/v0/state/") endpoint in the docs.
