code: def get_urls(self):
          
          urls = super(TreeAdmin, self).get_urls()
  
          if django.VERSION < (1, 10):
              from django.views.i18n import javascript_catalog
              jsi18n_url = url(r'^jsi18n/$', javascript_catalog, {'packages': ('treebeard',)})
          else:
              from django.views.i18n import JavaScriptCatalog
  
              jsi18n_url = url(r'^jsi18n/$',
                  JavaScriptCatalog.as_view(packages=['treebeard']),
                  name='javascript-catalog'
              )
  
          new_urls = [
              url('^move/$', self.admin_site.admin_view(self.move_node), ),
              jsi18n_url,
          ]
          return new_urls + urls
docs: Adds a url to move nodes to this admin