cody: lvlgraph: Edge.Highlighted

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40487 4005530d-fff6-0310-9dd1-cebe43e6787f
cody: lvlgraph: HighlightConnectedEgdes

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40488 4005530d-fff6-0310-9dd1-cebe43e6787f