added a string SESSION_TIMEOUT to be returned when a widget times out
added a string SESSION_TIMEOUT to be returned when a widget times out

dennypage/pfsense,phil-davis/pfsense,dennypage/pfsense,NewEraCracker/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,dennypage/pfsense,ptorsten/pfsense,ptorsten/pfsense,pfsense/pfsense,phil-davis/pfsense,NewEraCracker/pfsense,pfsense/pfsense,pfsense/pfsense,dennypage/pfsense,pfsense/pfsense,NewEraCracker/pfsense,ptorsten/pfsense,phil-davis/pfsense