Make it simpler to locate a user, when managing group memeberships etc.

[janhalen]

The Username field contains UUIDs and claim data.

When a lot of new users are enrolled, the username lidt will get pretty difficult to view as a human, as the username contains both UUID and other claim infos.

Lets discuss how we can keep the unique identifiability at the same time as making the user experience of adding a user to a group, less confusing and difficult

[janhalen]

@nicolas-semaphor : Please confirm that when custom attributes are pulled (after #65 is fixed), this will be fixed also

[nicolas-semaphor]

This should be fixed when the username is properly parsed from the X509SubjectName attribute, as described by #48