fix topbar to work on mobile devices

The topbar, by way of JavaScript, now works
on mobile devices such as cell phones and
tablets.

Internal links for entries from 1984 thru 2015
have been adjusted.

Ran `make www` to perform the above.

TODO: Fix some color issues on topbar.

TODO: More testing!

2013/cable2/README.md

@@ -105,7 +105,7 @@ this entry win the IOCCC, it will be the first time (to the author's knowledge)
 that the IOCCC has been used for peer review/publication of original research.
 - OCR in general is a hard problem. Here, we only recognise one possible form
 for each character. You can see what the supported character shapes look like by
-looking at the examples in [ascii.bmp](ascii.bmp). If you copy the shape of the
+looking at the examples in [ascii.bmp](%%REPO_URL%%/2013/cable2/ascii.bmp). If you copy the shape of the
 character forms you find in there, recognition accuracy should be very good
 (95%+). A more "useful" version would extend the character stroke table to
 support multiple different commonly-used forms for each character.