old_contents: from django.conf.urls import include, url
  from django.contrib import admin
  
  urlpatterns = [
      url(r'^admin/', admin.site.urls),
      url(r'^', include('jobsboard.web.urls')),
  ]
  
new_contents: from django.conf.urls import include, url
  from django.contrib import admin
  
  urlpatterns = [
      url(r'^admin/', admin.site.urls),
      url(r'^', include('jobsboard.web.urls')),
      url(r'^jobs/', include('jobsboard.jobs.urls')),
  ]
  
subject: include URLs from jobs app and namespace under /jobs/