PII Annotations are very out of date, this commit adds most that were
missing in edx-platform, and some additional annotations to the
safelist. It is not comprehensive, several other upstream Open edX
packages also need to be updated. It also does not include removing
annotations that have been moved upstream, or been removed entirely.
Those are separate follow-on tasks.
* feat: add comment to course reset model
* feat: add comment info to list endpoint
* feat: add comment to post endpoint
* fixup! feat: add comment to post endpoint
* Add new role for support staff.
* Move dashboard/support functionality into a new Django app called "support".
* Add support view for searching and regenerating certificates.
* Refactor certificates views into separate files.
