[Zope-dev] zope 3 wiki update

I've made the zope 3 wiki's skin consistent with the other wikis, leaving the pond design for sole use of the foundation site. I also did a little front page cleanup and updated the intro - corrections welcome. Until some cache expires or can be flushed/restarted by Jens, you might see a messed up display caused by the old stylesheet (http://wiki.zope.org/Zope3Wiki/stylesheet). If so, just shift-reload.