old_contents: from django.conf.urls.defaults import patterns, include, url
  from filebrowser.sites import site
  from django.contrib import admin
  admin.autodiscover()
  
  urlpatterns = patterns('',
      url(r'^achievements/', include('achievements.urls', namespace='achievements')),
      url(r'^admin/', include(admin.site.urls)),
      url(r'^admin/filebrowser/', include(site.urls)),
      (r'^admin/jsi18n', 'django.views.i18n.javascript_catalog'),
  )
new_contents: from django.conf.urls.defaults import patterns, include, url
  from filebrowser.sites import site
  from django.contrib import admin
  admin.autodiscover()
  import settings
  
  urlpatterns = patterns('',
      url(r'^achievements/', include('achievements.urls', namespace='achievements')),
      url(r'^grappelli/', include('grappelli.urls')),
      url(r'^admin/filebrowser/', include(site.urls)),
      url(r'^admin/', include(admin.site.urls)),
      (r'^admin/jsi18n', 'django.views.i18n.javascript_catalog'),
      (r'^media/(?P<path>.*)$', 'django.views.static.serve', {'document_root': settings.MEDIA_ROOT}),
  )
subject: add new urls(grappelli,MEDIA_ROOT)