Some small fixes for node handling and hihglighting.
Some small fixes for node handling and hihglighting.

bjornna/adl-designer,lonangel/adl-designer,openEHR/adl-designer,lonangel/adl-designer,bjornna/adl-designer,lonangel/adl-designer,bjornna/adl-designer,lonangel/adl-designer,openEHR/adl-designer,openEHR/adl-designer,openEHR/adl-designer,bjornna/adl-designer