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!

2015/schweikhardt/README.md

@@ -85,7 +85,7 @@ You may explore this famous conjecture using this entry:
     ./prog 302ab3d052fb87c06228d249581be0e4
 ```
 
-NOTE: [try.sh](try.sh) runs these for you, filtered through `less(1)`.
+NOTE: [try.sh](%%REPO_URL%%/2015/schweikhardt/try.sh) runs these for you, filtered through `less(1)`.
 
 When you first look at the source, the code looks fairly straightforward.
 But look again.  Like the Collatz conjecture, simplicity is deceptive!