old_contents: from django.urls import re_path
  from grading_standard.views import LaunchView, GradingStandardView
  
  urlpatterns = [
      re_path(r'^$', LaunchView.as_view()),
      re_path(r'^api/v1/grading_standards/$', GradingStandardView.as_view()),
      re_path(r'^api/v1/grading_standards/(?P<grading_standard_id>[^/]*)$',
              GradingStandardView.as_view()),
  ]
  
new_contents: from django.urls import re_path
  from django.views.i18n import JavaScriptCatalog
  from grading_standard.views import LaunchView, GradingStandardView
  
  urlpatterns = [
      re_path(r'^$', LaunchView.as_view()),
      re_path(r'^api/v1/grading_standards/$', GradingStandardView.as_view()),
      re_path(r'^api/v1/grading_standards/(?P<grading_standard_id>[^/]*)$',
              GradingStandardView.as_view()),
      re_path(r'^jsi18n/$', JavaScriptCatalog.as_view(
              packages=['grade_conversion_calculator', 'grading_standard']),
              name='javascript-catalog')
  ]
  
subject: define the javascript catalog url