Added distinction between basic and advanced mode

manager/javascripts/managerfactory.js

@@ -0,0 +1,15 @@
+var manager = null;
+
+function getManager() {
+    if (manager) {
+        return manager;
+    } else {
+        const Manager = require("./manager");
+        manager = new Manager();
+        return manager;
+    }
+}
+
+module.exports = {
+    getManager: getManager
+};