*** 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

package.json

@@ -1,7 +1,7 @@
 {
   "name": "laerm-web-sensorapi",
-  "version": "3.0.0",
-  "date": "2023-04-07 16:30 UTC",
+  "version": "3.0.1",
+  "date": "2023-04-17 13:00 UTC",
   "private": true,
   "scripts": {
     "start": "node bin/www.js >>log/laerm_web.log 2>&1"