request: devide users in admin section

[SAuroux]

After having learned that old users need to remain for different purposes, I'd like to have the users grouped in "allowed to login: yes" and "allowed to login: no", with the former users being listed first of course.

This way, it is way easier to manage the truely active users and not having them mixed up with the majority of users that only need to remain for other purposes.

[SAuroux]

Or maybe even 3 lists:

1. Active users
2. Passive delegates
3. Others