*** WIP *** Language switching works

public/javascripts/checklang.js
   - better description in comment

views/chglang.pug
   - text for 'h1' changed

routers/index.js
   - more comment

views/index.pug
   - no more action on click at language

package.json
  "version": "3.0.1",
  "date": "2023-04-17 13:00 UTC",

public/stylesheets/style.sass
   - css for 'Loading' on first page

locales/en/translation.json
   - type

routes/index.js

@@ -13,7 +13,9 @@ const renderOpts = (sid) => {
   }
 }
 
-/* GET home page. */
+/* GET home page. If there is no parameter 'lng=xx', checke stored language and call 
+te page again wird correct language (chglang.js))
+*/
 router.get('/', function(req, res, next) {
 //  req.i18n.changeLanguage('de')
   if(req.query.lng === undefined) {