Fix course submission view to display nulls properly
Fix course submission view to display nulls properly

rlorenzo/tmlpstats,tmlpstats/tmlpstats,tmlpstats/tmlpstats,tmlpstats/tmlpstats,rlorenzo/tmlpstats,tmlpstats/tmlpstats,rlorenzo/tmlpstats,rlorenzo/tmlpstats,rlorenzo/tmlpstats