add back week heading in wiki course output (refs #556)
add back week heading in wiki course output (refs #556)

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