Add ability to restructure the call chain

For example, in the screenshot above the call chain could be restructured to:
(lowest level)
- Invoke Node in
- GUI Utilities.lvlib:Front Panel.lvclass:Control Refs – Reinit to Default.vi …
…
Nth level. (top level caller here).
Add ability to restructure the call chain
For example, in the screenshot above the call chain could be restructured to:
(lowest level)
…
Nth level. (top level caller here).