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

charts/preparecharts.js

@@ -191,7 +191,7 @@ export const liveData = (params, values, req) => {
 export const havgData = (params, values) => {
     let series1 = []
     let series2 = []
-    // Put values into the serieses
+    // Put values into the series
     let cnt = 0
     values.forEach((x) => {
         if (x.n_AVG != -1) {