old_contents: SECRET_KEY = "lorem ipsum"
  
  INSTALLED_APPS = (
      'django.contrib.auth',
      'django.contrib.contenttypes',
      'django.contrib.humanize',
      'django.contrib.sites',
      'django.contrib.sessions',
  
      'tango_shared',
      # from tango_shared reqs
      'voting',
      'easy_thumbnails',
      'photos',
      'articles'
  )
  
  DATABASES = {
      'default': {
          'ENGINE': 'django.db.backends.sqlite3',
          'NAME': ':memory:',
      }
  }
  
  ROOT_URLCONF = 'photos.urls'
  
  SITE_ID = 1
  
  PAGINATE_BY = 20
  
  USE_TZ = True
  
  MIDDLEWARE = [
      'django.contrib.sessions.middleware.SessionMiddleware',
      'django.middleware.common.CommonMiddleware',
      'django.middleware.csrf.CsrfViewMiddleware',
      'django.contrib.auth.middleware.AuthenticationMiddleware',
  ]
  
  TEMPLATES = [
      {
          'BACKEND': 'django.template.backends.django.DjangoTemplates',
          'APP_DIRS': True,
      },
  ]
new_contents: SECRET_KEY = "lorem ipsum"
  
  INSTALLED_APPS = (
      'django.contrib.admin',
      'django.contrib.auth',
      'django.contrib.contenttypes',
      'django.contrib.humanize',
      'django.contrib.sites',
      'django.contrib.sessions',
  
      'tango_shared',
      # from tango_shared reqs
      'voting',
      'easy_thumbnails',
      'photos',
      'articles'
  )
  
  DATABASES = {
      'default': {
          'ENGINE': 'django.db.backends.sqlite3',
          'NAME': ':memory:',
      }
  }
  
  ROOT_URLCONF = 'photos.urls'
  
  SITE_ID = 1
  
  PAGINATE_BY = 20
  
  USE_TZ = True
  
  MIDDLEWARE = [
      'django.contrib.sessions.middleware.SessionMiddleware',
      'django.middleware.common.CommonMiddleware',
      'django.middleware.csrf.CsrfViewMiddleware',
      'django.contrib.auth.middleware.AuthenticationMiddleware',
  ]
  
  TEMPLATES = [
      {
          'BACKEND': 'django.template.backends.django.DjangoTemplates',
          'APP_DIRS': True,
      },
  ]
subject: Add admin app