Language switching works

app.js
   - call to index.js changed

public/javascripts/global.js
   - no more show version
   - no more 'showReset

routes/index.js
   - added 'translate'-function

views/index.pug
   - texts changed for translation

views/layout.pug
   - show version and date

public/javascripts/map.js
   - added text from server

charts/preparecharts.js
   - translate texts

locales/[en|de]/translation.json
   - new translations

charts/urils.js
   - added translations

package.json
  "version": "3.0.2",
   "date": "2023-04-19 11:00 UTC",

charts/utilities.js

@@ -1,5 +1,7 @@
 // Utility routine for plotting the data
 
+import { translate as trans } from '../routes/index.js'
+
 export const colors = {'eq': '#0000FF', 'max': '#FF0000', 'min': '#008000', 'peaks': '#DAA520'};
 export const noise_ymin = 30;
 
@@ -47,7 +49,7 @@ export function createGlobObtions() {
         xAxis: {
             type: 'datetime',
             title: {
-                text: 'date/time',
+                text: trans('datetime'),
             },
             gridLineWidth: 2,
             labels: {