a213104790
The following changes are made to add LMS user_id: * Adds user_id scope to the JWT to provide the LMS user_id. * JWT cookies always use the user_id claim. ARCH-379
The ``user_authn`` app contains user authentication related features such as login and registration. * Ideally this would be in its own service, but at this point, LMS is the home of all authentication related features. * At this time, these features are still plugged into Studio. Future clean-up in Studio is intended to make this an LMS only feature.