added ability to change CHECKER_TIMEOUT interval
added ability to change CHECKER_TIMEOUT interval

ntucker/prerender,webflow/prerender,oqv/prerender,heralight/prerender,GrabCAD/prerender,fiverr/prerender,sfarthin/prerender,goabout/prerender,PaigeeWorld/prerender,zumper/prerender,goibibo/prerender,wcandillon/prerender,l0ne/prerender,tjfamodu/prerender,dwdm/prerender,fiverr/prerender,icilalune/prerender,bookbottles/prerender,viovendi/prerender,SIXNetworks/prerender,LendioDevs/prerender,ms123s/prerender,netconstruct/prerender,rubensayshi/prerender,danishin/prerender-server,daniel-shin1104/prerender-server,Kaliber/prerender,daniel-shin1104/prerender-server,prerender/prerender,Raccourci/prerender,aortbals/prerender,ifeelgoods/prerender,jahmad-fareportal/prerender,wildermuthn/prerender,inventaire/prerender,JoaquinSiabra/prerender,ovotech/prerender,GerardoNevarez/prerender,ArnaudValensi/prerender-schedule-from-sitemap,gamejolt/prerender,mgmco/prerender,JuoCode/prerender,inventaire/prerender,goabout/prerender,lammertw/prerender,danishin/prerender-server,fledit/fledit.static,netlify/prerender,challengerdeep/prerender,webflow/prerender