old_contents: from django.conf.urls import url
  
  from . import views
  
  urlpatterns = [
      url(r'^$', views.index, name='index'),
      url(r'^manage_users/', views.manage_users, name='manage_users'),
  ]
  
new_contents: from django.conf.urls import url
  
  from . import views
  
  urlpatterns = [
      url(r'^$', views.index, name='index'),
      url(r'^manage_users/', views.manage_users, name='manage_users'),
      url(r'^create_user/', views.create_user, name='create_user'),
  ]
  
subject: add create_user url