Non-admin users are unable to see other user names

[khyurri]

If Badgerdoc setup using local dev documentation, non-admin users are unable to create new extraction jobs because they are unable to see names of users.

AC:

• Find the reason of such behaviour. view-users and view-identity-providers are added to available roles badgerdoc-internal
• Fix it and create documentation in Readme section: "How to create non-admin users"