Features:
- dynamic processing of filters (shrink list as typing)
- Bind checkboxes (users , groups) to space key. (won't fix)
- Ldap server configuration
- change User/Group Gid
- tell us that the account is locked or expired ? (done)

Bugs:
- if primary group empty, gray ok button (won't fix)
- check numeric/positive  values in account and password expiration.