dav_submission: added first stuff for downloading submissions.

dav_submission/urls.py

@@ -4,5 +4,7 @@ from . import views
 
 urlpatterns = [
     url(r'^$', views.UploadView.as_view(), name='root'),
-    url(r'danke', views.SuccessView.as_view(), name='success'),
+    url(r'^danke', views.SuccessView.as_view(), name='success'),
+    url(r'^download/(?P<pk>.+)', views.DownloadView.as_view(), name='download'),
+    url(r'^download', views.ListView.as_view(), name='list'),
 ]