auth_exchange ------------- Views to support exchange of authentication credentials. The following are currently implemented: 1. DOTAccessTokenExchangeView View for token exchange from 3rd party OAuth access token to 1st party OAuth access token. Uses django-oauth-toolkit (DOT) to manage access tokens. 2. LoginWithAccessTokenView 1st party (open-edx) OAuth 2.0 access token (bearer/jwt) -> session cookie