code: function loadUIPart(appName, filePath) {
      var idx = filePath.indexOf(delim + appName + delim);
      var modulePath = filePath.substring(idx - 3);
      return this.pancakes.cook(modulePath);
  }
docs: Load the UI part
  @param appName
  @param filePath
  @returns {injector.require|*|require}