old_contents: from django.conf.urls import url
  
  from . import views
  
  urlpatterns = [
      url(r'^$', views.group_list),
      url(r'^groups/(?P<pk>\d+)/$', views.group_detail, name='group_detail'),
      url(r'^person/$', views.person_list),
      url(r'^person/(?P<pk>[^/]+)/$', views.person_detail, name='person_detail'),
      url(r'^missing_doc/$', views.missing_doc),
  ]
  
new_contents: from django.conf.urls import url
  
  from . import views
  
  urlpatterns = [
      url(r'^$', views.group_list),
      url(r'^groups/(?P<pk>\d+)/$', views.group_detail, name='group_detail'),
      url(r'^person/$', views.person_list, name='person_list'),
      url(r'^person/(?P<pk>[^/]+)/$', views.person_detail, name='person_detail'),
      url(r'^missing_doc/$', views.missing_doc, name='missing_doc'),
  ]
  
subject: Pone nombre a las vistas