Change update_grade.rjs to update_grade.js.erb and update unit tests accordingly.
Change update_grade.rjs to update_grade.js.erb and update unit tests accordingly.

wkwan/Markus,WilsonChiang/Markus,finnergizer/Markus,wkwan/Markus,ealonas/Markus,MarkUsProject/Markus,binuri/Markus,benjaminvialle/Markus,benjaminvialle/Markus,benjaminvialle/Markus,arkon/Markus,SoftwareDev/Markus,MarkUsProject/Markus,MarkUsProject/Markus,SoftwareDev/Markus,wkwan/Markus,ealonas/Markus,wkwan/Markus,WilsonChiang/Markus,jeremygoh/Markus,WilsonChiang/Markus,Lysette/Markus,david-yz-liu/Markus,benjaminvialle/Markus,finnergizer/Markus,arkon/Markus,melneubert/Markus,wkwan/Markus,binuri/Markus,SoftwareDev/Markus,binuri/Markus,finnergizer/Markus,melneubert/Markus,wkwan/Markus,david-yz-liu/Markus,david-yz-liu/Markus,melneubert/Markus,melneubert/Markus,jeremygoh/Markus,jeremygoh/Markus,binuri/Markus,david-yz-liu/Markus,ealonas/Markus,binuri/Markus,MarkUsProject/Markus,Lysette/Markus,david-yz-liu/Markus,SoftwareDev/Markus,melneubert/Markus,WilsonChiang/Markus,reidka/Markus,reidka/Markus,wkwan/Markus,Lysette/Markus,WilsonChiang/Markus,david-yz-liu/Markus,finnergizer/Markus,MarkUsProject/Markus,jeremygoh/Markus,jeremygoh/Markus,finnergizer/Markus,binuri/Markus,binuri/Markus,finnergizer/Markus,arkon/Markus,reidka/Markus,arkon/Markus,david-yz-liu/Markus,arkon/Markus,wkwan/Markus,jeremygoh/Markus,ealonas/Markus,melneubert/Markus,Lysette/Markus,ealonas/Markus,benjaminvialle/Markus,melneubert/Markus,arkon/Markus,ealonas/Markus,MarkUsProject/Markus,finnergizer/Markus,WilsonChiang/Markus,reidka/Markus,binuri/Markus,reidka/Markus,reidka/Markus,MarkUsProject/Markus,david-yz-liu/Markus,reidka/Markus,arkon/Markus,arkon/Markus,SoftwareDev/Markus,reidka/Markus,Lysette/Markus,binuri/Markus,ealonas/Markus,melneubert/Markus,Lysette/Markus,finnergizer/Markus,MarkUsProject/Markus,reidka/Markus,jeremygoh/Markus,ealonas/Markus,melneubert/Markus,benjaminvialle/Markus,jeremygoh/Markus,WilsonChiang/Markus,benjaminvialle/Markus,arkon/Markus,david-yz-liu/Markus,jeremygoh/Markus,SoftwareDev/Markus,Lysette/Markus,finnergizer/Markus,SoftwareDev/Markus,WilsonChiang/Markus,wkwan/Markus,WilsonChiang/Markus,ealonas/Markus