The layout of this widget should be modified a bit:

- The modal title should be the name of the user. There should be a badge (cfr. search) that says `Administrator` in case that user is a tenant administrator. If he isn't, no badge should be shown.
- The first tab should be the `Profile` tab, which is pretty much the same as what's there right now. However, the profile visibility descriptions can be dropped here.
- The second tab should be the `Actions` tab. The first title should be `Become user`, followed by a button that says `Become <displayName>`. The second title should be `Administration`, followed by the current `Tenant administrator` checkbox.
- The third tab should be the `Password` tab as implemented already