web: add images!

Adding images to replace the crummy text buttons that we used to have,
as well as the header. Include attribution for all the images in the
footer and here:

These three images were found on The Noun Project under a (CC BY 3.0)
license. Check out the project and these two authors!
	http://thenounproject.com/

	http://thenounproject.com/term/christmas-lights/84936/
	http://thenounproject.com/term/light-bulb/78297/
	http://thenounproject.com/term/light-bulb/77814/

	http://thenounproject.com/hayleyparke/
	http://thenounproject.com/dinagar/

Additionally, include my own jQuery instead of pulling from the CDN
(developing locally without a network connection made me sad).