!edituser: Changed level of channel-adds to 24, matching the earlier change to !adduser (4fd873ea2a345a58ce4fa1a0561b8057b6602a4d)

Signed-off-by: Martin Stone <martin@d7415.co.uk>
!edituser: Disabled banning users (to match !remuser 0463498edf621de1d173c1fee856cade7e6686a5)

Signed-off-by: Martin Stone <martin@d7415.co.uk>