Topic Reveal State in Navigation Pane

[Chemlak]

Okay, pretty much what the title says - it might be helpful if a topic's reveal state were visually available in the Navigation Pane.

Background: I was recently checking through topics in one of my realms, and one of the things I was looking for was the overall reveal state of the topic. A simple way of seeing this without needing to enter the topic itself would have been useful, and it occurs to me that if it showed in the Navigation Pane it would let the GM more easily see things in the realm without having to enter topics.