upgrade jquery and host a fallback copy

Having a fallback allows us to recover when the CDN is down and to
develop in remote locations where there is no Internet. ;)
add qunit fallback copy
serve qunit css rather than using a remote copy

Since I haven't found a way to use the CDN and fallback to the local
copy for CSS, just serve the CSS from our server. This allows
development to be possible without Internet.
move all 3rd party resources to res/third_party