old_contents: from django.conf.urls import patterns, url
  from docs.views import DocsRootView, serve_docs
  
  urlpatterns = patterns('',
                         url(r'^$', DocsRootView.as_view(), name='docs_root'),
                         url(r'^(?P<path>.*)$', serve_docs, name='docs_files'),
  )
  
new_contents: from django.conf.urls import patterns, url
  from docs.views import DocsRootView, serve_docs
  
  urlpatterns = patterns('',
                         url(r'^$', DocsRootView.as_view(permanent=True), name='docs_root'),
                         url(r'^(?P<path>.*)$', serve_docs, name='docs_files'),
  )
  
subject: Fix RemovedInDjango19Warning - RedirectView.permanent