old_contents: from django.conf.urls import patterns, include, url
  # Uncomment the next two lines to enable the admin:
  
  
  urlpatterns = patterns(
      '',
      url(r'^accounts/', include('apps.accounts.urls.json',
                                 namespace='accounts')),
  )
  
new_contents: from django.conf.urls import patterns, include, url
  # Uncomment the next two lines to enable the admin:
  
  
  urlpatterns = patterns(
      '',
      url(r'^accounts/', include('apps.accounts.urls.json',
                                 namespace='accounts')),
      url(r'^core/', include('apps.core.json_urls', namespace='core'))
  )
  
subject: add json urls for core app