Document User Roles (#1760)
Document User Roles (#1760)

# Release Notes

Add documentation describing user roles and permissions

# Additional Context

This is based on what we've done for Dartmouth and UIC in the past. I've added a little more detail including the account-specific roles.

Based on https://github.com/tablexi/nucore-uic/blob/develop/doc/user_roles.md and https://github.com/tablexi/nucore-dartmouth/blob/develop/doc/user_roles.md (restricted repositories)

There'll probably be some merge conflicts when we try to bring it down to the individual schools. Theirs have been somewhat crafted to be specific to their use case (DC wasn't using the billing admin role at the time we originally wrote it).

tablexi/nucore-open,tablexi/nucore-open,tablexi/nucore-open,tablexi/nucore-open