[Feature Request] Simple switch to remove user management and password updates from UI

[eubyte]

For installations where users and access control are managed by external systems (e.g. LDAP, OPA, etc.), we strongly feel that a simple 'switch' (or a couple of 'switches') in superset_config.py should be made available to disable user editing and password update capabilities (both, self and by admins) by completely removing it from the UI. Thank you!

[sfirke]

This seems like a straightforward addition to me! My users and I authenticate through Azure SSO, we never noticed the "Reset my password" and "Edit user" buttons on the User -> Info page but they have no use at all for us. I don't even know what resetting passwords would do in our context. And agreed that this could be governed by a simple new config switch.

Anyone is free to implement this and send a PR, I don't think it requires further discussion IMO.