Gradeables properly cleaned up on block destroy
Gradeables properly cleaned up on block destroy

adamwight/WikiEduDashboard,Wowu/WikiEduDashboard,sejalkhatri/WikiEduDashboard,KarmaHater/WikiEduDashboard,sejalkhatri/WikiEduDashboard,adamwight/WikiEduDashboard,thenickcox/WikiEduDashboard,alpha721/WikiEduDashboard,ragesoss/WikiEduDashboard,alpha721/WikiEduDashboard,majakomel/WikiEduDashboard,MusikAnimal/WikiEduDashboard,feelfreelinux/WikiEduDashboard,MusikAnimal/WikiEduDashboard,feelfreelinux/WikiEduDashboard,WinnySilva/WikiEduDashboard,alpha721/WikiEduDashboard,feelfreelinux/WikiEduDashboard,sejalkhatri/WikiEduDashboard,alpha721/WikiEduDashboard,MusikAnimal/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,feelfreelinux/WikiEduDashboard,WinnySilva/WikiEduDashboard,adamwight/WikiEduDashboard,ragesoss/WikiEduDashboard,WinnySilva/WikiEduDashboard,sejalkhatri/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,KarmaHater/WikiEduDashboard,KarmaHater/WikiEduDashboard,Wowu/WikiEduDashboard,majakomel/WikiEduDashboard,majakomel/WikiEduDashboard,majakomel/WikiEduDashboard,Wowu/WikiEduDashboard,ragesoss/WikiEduDashboard,KarmaHater/WikiEduDashboard,thenickcox/WikiEduDashboard,MusikAnimal/WikiEduDashboard,thenickcox/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,Wowu/WikiEduDashboard,sejalkhatri/WikiEduDashboard