Extracted serialiser for encryption into a flask module

- allows mocking easier
- shared across methods
- not built everytime

tests/conftest.py

@@ -63,6 +63,7 @@ def notify_db_session(request):
 def notify_config(notify_api):
     notify_api.config['NOTIFY_API_ENVIRONMENT'] = 'test'
     notify_api.config.from_object(configs['test'])
+    return notify_api.config
 
 
 @pytest.fixture(scope='function')