3340 Move JavaScript from head to improve performance

http://code.google.com/p/otwarchive/issues/detail?id=3340

* Moved most of the javascript out of the `<head>` and under the footer
* Left LiveValidation in `<head>` because it otherwise breaks and we're changing it soonish anyway
* Moved the yield for our page-specific javascript out of `<div id="footer">` and into the new javascripts partial because it needs to be loaded after jQuery