Improved progressive rendering (js at page bottom) and optional CDN use 

* Improve progressive rendering of pages by moving the javascript to the bottom of the page
* Optionally use CDNs to load jquery and twitter-bootstrap (defaults to True)
* Cleanup of monospace & orphan theme (they don't have js, and thus shouldn't have colorbox css)

Before Robert suggested I make CDN usage optional, I actually removed the jquery & bootstrap js and css assets. I've since added them back in, just in case there's confusion at the activity earlier in the branch.

Lastly, there was a pull request to update to bootstrap 2.3.0 just before I created this request. If that is accepted, let me know and I'll update the templates to fetch 2.3.0 from the CDN instead of 2.2.2