Fix a typo and remove needlessly gendered language
Add flake8 configuration to setup.cfg, and silence warnings for unused openid imports
Fix a few deprecation warnings by switching to assertEqual
Set usable defaults for the OAuth URIs

Add settings for Google OAuth2, mirroring the default for
DJANGO_ADMIN_SSO_OPENID_ENDPOINT.
Add instructions for generating a client ID and secret key with the current Google Developer Console
Mention OAuth2 in the introductory paragraph
This should be a link
Merge commit '9905a' into develop