Wiki work

[Matt Mackall]

At the sprint, we talked about plans to revitalize our wiki. We've
started working on some of that and you're welcome to join in. Starting
points:

http://mercurial.selenic.com/wiki/WikiCleanup
http://mercurial.selenic.com/wiki/WikiStyleGuide

And of course there's a lot of activity here:

http://mercurial.selenic.com/wiki/RecentChanges

Also note that I've fixed the infamous 'immutable page' confusion.
Clicking edit will take you to the login/register page if you're not
already logged in.

-- 
Mathematics is the supreme nostalgia of our time.