Add a way to pause polling for a check.
Add a way to pause polling for a check.

Model-only for now, no GUI yet.

traskat/uptime,heamon7/uptime,aregpetrosyan/web,cloudfoundry-community/uptime-cfready,rkmallik/uptime-openshift,rkmallik/uptime-openshift,aregpetrosyan/web,SufianHassan/uptime,nerevu/uptime,f33rx/docker-uptime,GuptaVineet-IBM/upTime_ford,SpringerPE/uptime,scalp42/uptime,ptisp/uptime,blendlabs/uptime,bathree/uptime,WillGuan105/uptime,b-pedzik/uptime,ptisp/uptime,memezilla/uptime,nerevu/uptime,0x8BADFOOD/uptime,MichaelStephan/uptime,prune998/uptime,f33rx/docker-uptime,askcs/uptime,sinkingshriek/uptime,ifavo/uptime,Maluuba/uptime,jraigneau/watchdog,gleicon/uptime,arthurpro/uptime,SaravananPerumal23/uptime2,SaravananPerumal23/uptime2,nacyot/uptime,RafeHatfield/nodeuptime,brianjking/uptime,erpframework/uptime,fzaninotto/uptime,blackboard/uptime,phanan/uptime