Include username in csv export

core/views/export_csv.py

@@ -12,7 +12,7 @@ def export_csv(request):
     response['Content-Disposition'] = 'attachment; filename="grady_results.csv"'
 
     writer = csv.writer(response)
-    writer.writerow(['Matrikel', 'Name', 'Summe'] +
+    writer.writerow(['Matrikel', 'Username',  'Name', 'Sum'] +
                     [s.name for s in SubmissionType.objects.all().order_by('name')])
 
     for student in Student.objects.all():
@@ -22,6 +22,7 @@ def export_csv(request):
             score_list = [0] * SubmissionType.objects.count()
         writer.writerow([
             student.matrikel_no,
+            student.user.username,
             student.name,
             sum(score_list),
             *score_list