NBT_NameService.py: Even more cleanup; one bugfix.
NBT_NameService.py: Even more cleanup; one bugfix.

Honestly, I wouldn't have bothered if I hadn't found an actual bug.
  * Add a line to the ToDo comments.
  * Remove an unused import.
  * Bugfix: Use the correct class name in a call to super().

manuella/Carnaval,ubiqx-org/Carnaval