New mailarchive front page

["Justin C. Sherrill" <justin@xxxxxxxxxxxxxxxxxx>]

I added a Google search for while we work on a 'homegrown' solution, plus
moved the by-date links to the front page, and corrected the stylesheet
link.  Any objections?

The current page, for comparison:
http://leaf.dragonflybsd.org/mailarchive/

The new page:
http://leaf.dragonflybsd.org/mailarchive/index2.html