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!

2014/birken/README.md

@@ -188,7 +188,7 @@ generator by accessing its prefix code: 16309).
 
 As obligated by a program that employs 23rd century cloaking technology, when
 the source is fed as input to [IOCCC size tool version
-2014-09-23-v19](../iocccsize.c), and the `-i` command line option is used, the
+2014-09-23-v19](%%REPO_URL%%/2014/iocccsize.c), and the `-i` command line option is used, the
 value printed is 0.