Proposed by mnstri.
- Add a View > Show Node Class Names menu item (persist in user preferences).
- Make class names disabled/hidden by default.
- When enabled/shown, use the current behavior (show both the title and the class name)
When disabled/hidden —
- If the node title is the default, hide the node class name
- If the node title is not default, use the current behavior (show both the customized title and the class name)