Introduce IGV-specific node identifier and encapsulate it in IGV by showing a
configurable 'short node text' string instead.
Reviewed-by: iveresov, kvn
Upgrade IGV's underlying NetBeans platform to version 12.3, switch build system
from Ant to Maven, and fix broken unit tests in Data module.
Reviewed-by: kvn, chagedorn, neliasso, xliu
