Prevent Admin user from de-leveling its own permissions

[asandoval]

Description

version 0.9.1

When logged in as the default admin, the client allows you to change that user's role from ServiceRole.ADMIN. It's preferable that this user update call fail. If it is a desired action, the user should be prompted to reissue the command from a different admin account. (Though, after having done this I'm finding many reasons not to lessen the permissions of that user).

Furthermore, it appears impossible to change back the role of the default admin -- even as a different admin user.

Are you interested in working on this improvement yourself?

Yes, in collaboration with OM.

Additional Context

Add any other context or screenshots.