load tutorial only once

src/data/tutorials.js

@@ -1,11 +1,11 @@
-let tutorials = [
-    require('./tutorial/ErsteSchritte.json'),
-    require('./tutorial/Schleifen.json'),
-    require('./tutorial/Wenn-DannBedingungen.json'),
-    require('./tutorial/VerwendungVonVariablen.json'),
-    require('./tutorial/SendenVonMesswertenUeberLoRa.json'),
-    require('./tutorial/AnzeigeVonMesswertenAufDemDisplay.json'),
-    require('./tutorial/MesswerteAnDieOpenSenseMapSenden.json')
-]
-
-module.exports = tutorials;
+// let tutorials = [
+//     require('./tutorial/ErsteSchritte.json'),
+//     require('./tutorial/Schleifen.json'),
+//     require('./tutorial/Wenn-DannBedingungen.json'),
+//     require('./tutorial/VerwendungVonVariablen.json'),
+//     require('./tutorial/SendenVonMesswertenUeberLoRa.json'),
+//     require('./tutorial/AnzeigeVonMesswertenAufDemDisplay.json'),
+//     require('./tutorial/MesswerteAnDieOpenSenseMapSenden.json')
+// ]
+//
+// module.exports = tutorials;