Add global overview for `User` information (activation status, password, etc.)

[tomudding]

What would you like?

For admin add a flag to a user's profile to see whether they have activated their account (i.e. they have a User).

Why is this needed?

I want to stop looking at the MariaDB database to be able to determine this.

Other information

Potentially also useful for the board?

[tomudding]

Actually, this can probably go under the 'Users' administration section.

[tomudding]

Also add information on UserRoles that target a specific user.