Resolves #123
Resolves #123

Use select instead of map so that we don't get nil as one of a user's courses.

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