old_contents: from django.conf.urls import include, url
  from markdownx import urls as markdownx
  
  from tutorials import views
  
  urlpatterns = [
      url(r'^$', views.ListTutorials.as_view()),
      url(r'add/', views.NewTutorial.as_view(), name='add_tutorial'),
      url(r'^markdownx/', include(markdownx)),
  
      # This must be last, otherwise it will match anything
      url(r'^(?P<tutorial_id>[\w\-]+)/$', views.TutorialDetail.as_view()),
  ]
new_contents: from django.conf.urls import include, url
  
  from tutorials import views
  
  urlpatterns = [
      url(r'^$', views.ListTutorials.as_view()),
      url(r'add/', views.NewTutorial.as_view(), name='add_tutorial'),
  
      # This must be last, otherwise it will match anything
      url(r'^(?P<tutorial_id>[\w\-]+)/$', views.TutorialDetail.as_view(), name='detail_tutorial'),
  ]
subject: Move markdownx url to oeplatform/urls.py