jQuery navigation code doesn't work if you don't have jQuery installed on the page

There is code in Seleno to take care of this by injecting jQuery, but it doesn't seem to work.

Something to think about when looking at this is what happens if there is no network connection? Is that something we need to worry about and we should always just reference a CDN or do we embed jQuery inside of Seleno dll and inject the contents into the page directly when it's needed?
