Fixed bug 82 in a quick way by reducing min size.

This is a quick fix for #82.

If Dave Coleman was at Willow Garage when he wrote this code, I can tell you he was using a 2560x1600 resolution screen.  So clearly he wasn't worried about fitting everything in compactly.

This change is just a quick patch to make things usable on a 768-vertical screen.  Better changes would involve reworking the layout of the main page.  There is lots of unnecessary space in there, but it is not filled by removing the min-size lines, it just squishes the widgets down and hides a bunch of information.