jQuery, Header, and Footer 3/4

Merge third! (After jQuery, Header, and Footer 2/4 https://github.com/otwcode/otwarchive/pull/1103)

Rework the contents and design of the footer with an eye on making it usable with JavaScript disabled, since the skin chooser previously overlapped the other links in that case.

Issue 3293 Footer doesn't match header http://code.google.com/p/otwarchive/issues/detail?id=3293