Added a mobile version of the site

It's not pretty, but you don't need pretty when you're paying for mobile bandwidth...

It'll get tweaked eventually, but so far the big issue I have with it is that I don't think the "full site" link actually takes you to the full site.

Also, I am not sure about keeping those links/tabs at the very top of the screen, so I added another link to the forum over on the left side, above the classified ads link, so that people can find the forum on the mobile site. (Those top tab links don't show up right now on the mobile version.)