Ticket #304. Fix bogus dynamic entries in system->gateways after deleting gateways.
Ticket #304. Fix bogus dynamic entries in system->gateways after deleting gateways.

phil-davis/pfsense,dennypage/pfsense,NOYB/pfsense,pfsense/pfsense,brunostein/pfsense,NewEraCracker/pfsense,ch1c4um/pfsense,pfsense/pfsense,ptorsten/pfsense,BlackstarGroup/pfsense,ptorsten/pfsense,jxmx/pfsense,phil-davis/pfsense,BlackstarGroup/pfsense,brunostein/pfsense,ch1c4um/pfsense,dennypage/pfsense,pfsense/pfsense,ch1c4um/pfsense,NOYB/pfsense,NewEraCracker/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,phil-davis/pfsense,jxmx/pfsense,NewEraCracker/pfsense,ch1c4um/pfsense,dennypage/pfsense,brunostein/pfsense,NOYB/pfsense,ptorsten/pfsense,BlackstarGroup/pfsense,BlackstarGroup/pfsense,pfsense/pfsense,dennypage/pfsense,jxmx/pfsense