old_contents: DATABASES = {
      'default': {
          'ENGINE':   'django.db.backends.postgresql_psycopg2',
          'NAME':     'testdb',
          'USER':     'postgres',
          'PASSWORD': '',
          'HOST':     'localhost',
          'PORT':     '',
      }
  }
  
  SOUTH_TESTS_MIGRATE = False  # To disable migrations and use syncdb instead
  SKIP_SOUTH_TESTS = True  # To disable South's own unit tests
  USE_DEBUG_TOOLBAR = False
  
new_contents: DATABASES = {
      'default': {
          'ENGINE':   'django.db.backends.postgresql_psycopg2',
          'NAME':     'testdb',
          'USER':     'postgres',
          'PASSWORD': '',
          'HOST':     'localhost',
          'PORT':     '',
      }
  }
  
  SOUTH_TESTS_MIGRATE = False  # To disable migrations and use syncdb instead
  SKIP_SOUTH_TESTS = True  # To disable South's own unit tests
  USE_DEBUG_TOOLBAR = False
  
  if len(sys.argv) > 1 and 'test' in sys.argv[1]:
      AUTHENTICATION_BACKENDS = ('django.contrib.auth.backends.ModelBackend',)
  
subject: Update travis settings