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/mills/README.md

@@ -110,7 +110,7 @@ them.
 ### User-modifiable Features
 
 The code can be user-modified simply by changing the build command line.
-The following symbols are defined in the [Makefile](Makefile):
+The following symbols are defined in the [Makefile](%%REPO_URL%%/2013/millsMakefile):
 
 * `-DLT=x1,y1,z1,x2,y2,z2,...` defines the coordinates of the lights in the
 scene. It should be a comma-separated list of coordinates `(x, y, z)`, three per
@@ -129,7 +129,7 @@ The original program bound the server to `INADDR_ANY` to allow everyone to
 experience the server's output.  The Judges suggested that I instead restrict
 the bind to `INADDR_LOOPBACK` to reduce security alarms.  As a compliant veteran
 of innumerable post-ship late feature additions, I have modified the
-[Makefile](Makefile) to inject the new code without destroying the beautiful
+[Makefile](%%REPO_URL%%/2013/millsMakefile) to inject the new code without destroying the beautiful
 spherical symmetry of the source code.  In addition, I have altered the word
 `sin_port` to the more family-friendly version `win_port` (via
 `-Dwin_port="sin_addr.s_addr=htonl(2130706433),R.sin_port"`) to protect against