scripts: Add a mkfancybox script

Writing html boilerplate is a pain, so this script automates the process
of sorting images and creating the html for them.
pictures: Add gallery assets
assets: Add fancybox

"fancyBox is a tool that offers a nice and elegant way to add zooming
functionality for images, html content and multi-media on your
webpages. It is built on the top of the popular JavaScript framework
jQuery and is both easy to implement and a snap to customize."

http://fancyapps.com/fancybox/
build: Alphabetise file list
Add a pictures page
Merge branch 'iss7'