code: function loadTranslation(localeFilePath) {
      if(typeof localeFilePath == "undefined"){
          messages = defaultMessages;
          return null;
      }
      let fp = path.join(__dirname, localeFilePath);
      messages = require('jsonfile').readFileSync("." + fp);
      return messages;
  }
docs: Loads translation file.
  @param {string} localeFilePath
  @return {object} messages