message: Add VueShortKey to main app
diff: import './vendor';
  import * as Vue from 'vue';
  const GetTextPlugin = require( 'vue-gettext' );
  +const VueShortkey = require( 'vue-shortkey' );
  import { platformBrowserDynamic } from 'ng-metadata/platform-browser-dynamic';
  import { enableProdMode } from 'ng-metadata/core';
  @@ -28,6 +29,8 @@ Vue.use( GetTextPlugin, {
  translations: {},
  } );
  +Vue.use( VueShortkey );
  +
  Loader.addLoader( new HammerLoader() );
  Loader.addLoader( new HammerVueLoader() );
  Loader.addLoader( new UploadLoader() );
  