[feladat @ 83]
Bugfix: the list_zones.php wasn't listing zones correctly if a zone
didn't have an owner. Bugfix: the list_supermasters.php never listed
more then one supermaster, even if there were more. Both bugs were
reported by Jasper van Erven Dorens.
printf(_('You are about to delete a slave zone of which the master nameserver, %s, is a supermaster. Deleting the zone now, will result in temporary removal only. Whenever the supermaster sends a notification for this zone, it will be added again!'),$slave_master);