Add missing require to CoursesController
Add missing require to CoursesController

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