old_contents: from django.shortcuts import render
  
  from normandy.base.decorators import short_circuit_middlewares
  
  
  @short_circuit_middlewares
  def repair(request, locale):
      return render(request, 'selfrepair/repair.html', {
          'locale': locale,
      })
  
new_contents: from django.conf import settings
  from django.shortcuts import render
  from django.views.decorators.cache import cache_control
  
  from normandy.base.decorators import short_circuit_middlewares
  
  
  @short_circuit_middlewares
  @cache_control(public=True, max_age=settings.API_CACHE_TIME)
  def repair(request, locale):
      return render(request, 'selfrepair/repair.html', {
          'locale': locale,
      })
  
subject: Add cache headers to self-repair page