message: Log sync pull responses to the log as well (lib)
diff: @@ -5448,6 +5448,9 @@ error Context::pullBatchedUserData() {
  Json::Reader reader;
  reader.parse(user_data_json, json);
  + std::cerr << "PULLED: " << std::endl << json.toStyledString() << std::endl;
  + logger.debug("Sync server pull response: ", json.toStyledString());
  +
  if (err != noError) {
  return err;
  }
  