Upgrade to v26 (#172)

* A bunch of new updates from icehrm pro

* Push changes to frontend

web/api/BaseGraphAdapter.js

@@ -0,0 +1,27 @@
+/*
+ Copyright (c) 2018 [Glacies UG, Berlin, Germany] (http://glacies.de)
+ Developer: Thilina Hasantha (http://lk.linkedin.com/in/thilinah | https://github.com/thilinah)
+ */
+
+import AdapterBase from './AdapterBase';
+
+class BaseGraphAdapter extends AdapterBase {
+  getDataMapping() {
+    return [];
+  }
+
+  getHeaders() {
+    return [];
+  }
+
+  getFormFields() {
+    return [];
+  }
+
+  // eslint-disable-next-line no-unused-vars
+  createTable(elementId) {
+
+  }
+}
+
+export default BaseGraphAdapter;