Don't use self_admin_url() on ms-users list
|Reported by:||ocean90||Owned by:||ryan|
self_admin_url() returns only the network url, if is_network_admin() is true.
The problem, if we have an AJAX request is_network_admin() is always false.
On network/users I have on page 2 a user which I want to grant super admin privileges. But it's not possible because it the edit link is linked to wp-admin/user-edit.php and not to wp-admin/network/user-edit.php.
The fix would be to use network_admin_url() here, because the ms-user list class is used only in the network admin.