jQuery, Header, and Footer 1/4

Merge first!

This is the jQuery update which brings us up to 1.9.0 and updates our various jQuery plugins. It also removes unused JavaScript/jQuery that we were still loading and it moves the JavaScript to the bottom of the page to improve performance.

Issue 3340 JavaScript Position Slows Page Load: http://code.google.com/p/otwarchive/issues/detail?id=3340
Issue 3312 current jquery fails to provide jaws-compatible information in tag autocomplete: http://code.google.com/p/otwarchive/issues/detail?id=3312 (possibly; our autocomplete is customized and might not be resolved by changing to the new version of jQuery UI)