[Windcatcher]

Just a few things, but the first one is critical.

1. Fixed a very bad bug where the solid polygon seting was being saved as false by default instead of true. This warranted an immediate release.

2. Fixed a bug in the set ground height function where it didn't take the circular/square editing area radio buttons into account.

3. Added a new checkbox to the ground editor: topographic. This will show orange topographic lines for the entire zone, at 50 unit intervals. It's a life-saver when adding zone bounds.

WC