fix exporting root note, closes #1024

src/public/app/services/tree.js

@@ -162,6 +162,13 @@ function getNoteIdFromNotePath(notePath) {
 }
 
 function getNoteIdAndParentIdFromNotePath(notePath) {
+    if (notePath === 'root') {
+        return {
+            noteId: 'root',
+            parentNoteId: 'none'
+        };
+    }
+
     let parentNoteId = 'root';
     let noteId = '';
 
@@ -286,4 +293,4 @@ export default {
     getNotePathTitle,
     getHashValueFromAddress,
     parseNotePath
-};
+};