Settings split according to chart

routes/api.js
   - check type of sensor
   - translate error message

app.js
   - debug = false at i18n

public/javascripts/chart_utilities.js
   - setter/getter for current Tab

public/javascripts/global.js
   - settings dialog completely rearranged
   - if only sensorid is given, check type

routes/index.js
   - set language to global variable

views/index.pug
   - reaggange settings dialog
   - translate 'Error'

views/layout.pug
   - load new datepicker (vanillajs-datepicker)

public/javascripts/map.js
   - fetching from server refactored to function
   - reenable tabs after leaving map

charts/preparecharts
   - typo

public/javascripts/showcharts.js
   - loadAll extended to  load also live and map

public/stylesheets/style.sass
   - a few changes for settinds dialog

locales/[de|en]
   - added a few words

charts/utilities.js
   - setter and getter for language

routes/index.js

@@ -1,5 +1,6 @@
 import express from 'express'
 import pkg from  '../package.json' assert { type: "json" }
+import { setLanguage } from '../charts/utilities.js'
 
 const router = express.Router()
 const { name, version, date } = pkg
@@ -18,8 +19,8 @@ let i18n;
 const translate = (x) => {
   return i18n.t(x)
 }
-/* GET home page. If there is no parameter 'lng=xx', checke stored language and call 
-te page again wird correct language (chglang.js))
+/* GET home page. If there is no parameter 'lng=xx', check stored language and call
+te page again with correct language (chglang.js))
 */
 router.get('/', function(req, res, next) {
 //  req.i18n.changeLanguage('de')
@@ -28,6 +29,7 @@ router.get('/', function(req, res, next) {
   } else {
     i18n = req.i18n
     let opts = renderOpts(-1)
+    setLanguage(req.query.lng)
     res.render('index', opts)
   }
 })