EvoGUI v0.3.0

A lot of things got moved around in the code, so let me just hit the user-visible highlights:

• The GUI looks smaller and doesn't have a background anymore! I stumbled onto this look while I was trying to make things get closer together and I thought it looked pretty good. The lack of frame means that it can be harder to read sometimes, but it's relatively easy to find a contrasting background somewhere (like, say, by opening the map GUI).
• There is now a button labeled "+" or "-". This button expands or contracts the GUI to show more/fewer value counters.
• There is now a button labeled "s". What it does is it opens a settings dialog where you can choose whether a given value counter should be always visible, visible in popup, both, or neither. This one would kind of work better as a radio button, but I'm unwilling to stress the code by faking it.

An unintended consequence is that now you can reorder the display elements by unchecking and rechecking their boxes. This is purely accidental, and having to do with how we update the GUI, but it looked good so I left it in.