* Fix the URLs that are spelt "fibonnaci" instead of "fibonacci".
+* jqTree navigation menu in the main left pane:
+ * Find a way to minify/compress common/js/tree.jquery.js - it is too large.
+ - DONE (at least partly).
+ * Extract the jQtree functionality from t2/humour/bits/index.html into
+ * Convert the static navigation menu to the reduced one, so it will