Bug 4772 - stats page uses oldstyle urls

http://bugs.dwscoalition.org/show_bug.cgi?id=4772

This gets rid of the old-style hand-rolled user URLs in stats.bml, and displays a standard userhead & name instead.

Newbie move: I totally forgot to set my dreamwidth email address (shadowspar@dreamwidth.org) in git's config.  Happy to squash and/or rebase if needed, for this or other reasons. =)