v1 of dark theme

This is the initial version of a dark theme. A preview of sorts is here http://a.pomf.se/zsdovz.jpg

It's not final, but it should work for all (current) pages. I can't get the vagrant box to work again (looks like database stuff again), so there's a slight chance it won't work perfectly. It is still slightly half-assed too, but I'll fix any past half-assednesses once I actually have time again.

Mostly putting that out there if someone does happen to get around to implementing theme selection, as there seemed to be some people wanting a dark theme.

I probably won't be too active for at least a month, but I'll drop by once in a while, so leave reminders if there's anything.