old_contents: from django.conf.urls import url
  
  from . import views
  
  
  urlpatterns = [
      url(r'^$', views.index, name='index'),
  ]
  
new_contents: from django.conf.urls import url
  
  from . import views
  
  
  urlpatterns = [
      url(r'^$', views.index, name='index'),
      url(r'^new_activity$', views.NewActivity.as_view(), name='new_activity'),
  ]
  
subject: add url to access cash activity input page