[SD-1491] - (fix) - Authoring - opened articles disappears.(null handling)
[SD-1491] - (fix) - Authoring - opened articles disappears.(null handling)

petrjasek/superdesk,akintolga/superdesk,darconny/superdesk,fritzSF/superdesk,amagdas/superdesk,petrjasek/superdesk,marwoodandrew/superdesk,marwoodandrew/superdesk,petrjasek/superdesk,ancafarcas/superdesk,Aca-jov/superdesk,superdesk/superdesk-aap,superdesk/superdesk-ntb,vied12/superdesk,verifiedpixel/superdesk,amagdas/superdesk,Aca-jov/superdesk,verifiedpixel/superdesk,akintolga/superdesk-aap,mdhaman/superdesk,ioanpocol/superdesk,fritzSF/superdesk,ioanpocol/superdesk-ntb,akintolga/superdesk,verifiedpixel/superdesk,sjunaid/superdesk,marwoodandrew/superdesk,akintolga/superdesk-aap,fritzSF/superdesk,gbbr/superdesk,darconny/superdesk,fritzSF/superdesk,sjunaid/superdesk,verifiedpixel/superdesk,hlmnrmr/superdesk,superdesk/superdesk-aap,mdhaman/superdesk,pavlovicnemanja/superdesk,pavlovicnemanja92/superdesk,pavlovicnemanja/superdesk,thnkloud9/superdesk,plamut/superdesk,sivakuna-aap/superdesk,superdesk/superdesk,akintolga/superdesk-aap,marwoodandrew/superdesk-aap,ioanpocol/superdesk-ntb,superdesk/superdesk-aap,superdesk/superdesk,liveblog/superdesk,superdesk/superdesk-ntb,petrjasek/superdesk-ntb,petrjasek/superdesk-ntb,vied12/superdesk,superdesk/superdesk,plamut/superdesk,mdhaman/superdesk-aap,akintolga/superdesk,akintolga/superdesk-aap,akintolga/superdesk,amagdas/superdesk,thnkloud9/superdesk,mugurrus/superdesk,pavlovicnemanja92/superdesk,liveblog/superdesk,sivakuna-aap/superdesk,mugurrus/superdesk,liveblog/superdesk,hlmnrmr/superdesk,liveblog/superdesk,gbbr/superdesk,mdhaman/superdesk-aap,petrjasek/superdesk-ntb,vied12/superdesk,ioanpocol/superdesk-ntb,Aca-jov/superdesk,vied12/superdesk,mugurrus/superdesk,mdhaman/superdesk-aap,superdesk/superdesk-ntb,sivakuna-aap/superdesk,marwoodandrew/superdesk,gbbr/superdesk,marwoodandrew/superdesk,ioanpocol/superdesk,pavlovicnemanja/superdesk,petrjasek/superdesk,darconny/superdesk,sjunaid/superdesk,thnkloud9/superdesk,ancafarcas/superdesk,marwoodandrew/superdesk-aap,amagdas/superdesk,mdhaman/superdesk-aap,marwoodandrew/superdesk-aap,petrjasek/superdesk-ntb,akintolga/superdesk,superdesk/superdesk-aap,superdesk/superdesk-ntb,marwoodandrew/superdesk-aap,fritzSF/superdesk,ioanpocol/superdesk,amagdas/superdesk,superdesk/superdesk,pavlovicnemanja92/superdesk,pavlovicnemanja/superdesk,vied12/superdesk,verifiedpixel/superdesk,hlmnrmr/superdesk,liveblog/superdesk,sivakuna-aap/superdesk,plamut/superdesk,sivakuna-aap/superdesk,mdhaman/superdesk,plamut/superdesk,pavlovicnemanja92/superdesk,ancafarcas/superdesk,pavlovicnemanja92/superdesk,plamut/superdesk