More coal theme

[Matt Mackall]

A bunch of tweaks now in tip. You can see it here:

http://selenic.com/hg/coal-shortlog

Still struggling with the MSIE problem, but I think I've fixed a bunch
of the other issues. I think this probably describes the IE problem but
I couldn't get the fix to work:

http://tagsoup.com/cookbook/css/fixed/

If anyone else wants to take a stab at it, please do.

I've also drawn a couple simple icons for the file browser that
graphically-minded folks are encouraged to improve upon.

I'm also hoping this inspires some people more competent at web design
to try their hand at a new theme.

-- 
Mathematics is the supreme nostalgia of our time.