Do not allow CTRL-Z and CTRL-C to be pressed in console.
Do not allow CTRL-Z and CTRL-C to be pressed in console.

Fixes Ticket #57

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