fix broken forward/next/close buttons by moving the lightbox into the media folder.

+ remove the broken url() from the css, it causes warnings in chrome.
+ put the footer on more pages.
+ replace the codepage character with &copy; html entity
+ fix the spelling of "label"
+ apply the special-cased link coloring to all links. can't see purple on purple.
+ start a rudimentary software page that isn't linked from anywhere yet.