code: function (app) {
      var ret = false;
      if (config.apps[app] !== undefined) {
        delete config.apps[app];
        configHelpers.saveConfig();
        ret = true;
      }
      return ret;
    }
docs: Remove given application from the configuration file.
  The configuration file is written in JSON.
  
  @param {String} app The app name as it's typed by the user (user/repo).