Fixed QuestionGroup Delete: updated foreign_key
Fixed QuestionGroup Delete: updated foreign_key

MusikAnimal/WikiEduDashboard,Wowu/WikiEduDashboard,feelfreelinux/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,alpha721/WikiEduDashboard,majakomel/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,alpha721/WikiEduDashboard,sejalkhatri/WikiEduDashboard,sejalkhatri/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,KarmaHater/WikiEduDashboard,KarmaHater/WikiEduDashboard,MusikAnimal/WikiEduDashboard,majakomel/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,alpha721/WikiEduDashboard,sejalkhatri/WikiEduDashboard,Wowu/WikiEduDashboard,alpha721/WikiEduDashboard,feelfreelinux/WikiEduDashboard,Wowu/WikiEduDashboard,MusikAnimal/WikiEduDashboard,majakomel/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,sejalkhatri/WikiEduDashboard,Wowu/WikiEduDashboard,feelfreelinux/WikiEduDashboard,sejalkhatri/WikiEduDashboard,MusikAnimal/WikiEduDashboard,KarmaHater/WikiEduDashboard,KarmaHater/WikiEduDashboard,majakomel/WikiEduDashboard,feelfreelinux/WikiEduDashboard