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/utilities.js

@@ -2,6 +2,8 @@
 
 import { translate as trans } from '../routes/index.js'
 
+let language = 'en'
+
 export const colors = {'eq': '#0000FF', 'max': '#FF0000', 'min': '#008000', 'peaks': '#DAA520'};
 export const noise_ymin = 30;
 
@@ -139,3 +141,10 @@ export function calcDays(data, isyear) {
     return days;
 };
 
+export const setLanguage = (lng) => {
+    language = lng
+}
+
+export const getLanguage = () => {
+    return language
+}