NAVMAP macro displays nothing if given a space-level label

v215 build 411

1. With NavMap macro, if you specify a label which is also a label of the space, the nav map fails to appear and fails to give a warning message. Once I removed the label from the space level, the navmap reappears as expected.

Change request 1: if the label is a space label, please display the navmap the same as if the space-level label did not exist.

2.If you specify a label which does not exist at all in the space, there is a NULL exception thrown. (despite previous posts which claim this should be fixed in 2.1.5)

Change request 2: if the label does not exist, display a more friendly message, OR just display a navmap with the title, but no links, rather than an unfriendly error message.

Thank you.