new web site theme and logo

[Martin Pool]

We've just put up a new look bazaar-vcs.org web site, incorporating the
'merging traffic' logo.  I'd like to thank Matt Nuzum very much for his
work on this.

Matt still has some more exciting changes almost ready to go but we
wanted to get at least the new theme up for now.  If anyone has comments
or can point out any cross-browser bugs, please let us know.

-- 
Martin