Remove the dependence of external CDN resources

[hjortberg]

If you want to be able to run this in an isolated (from internet) environment the external references does not load (as expected) and it almost make the service unusable. The fix is quite simple, all we need to do is to download all the external references (all of them are listed in the index.html page) and save then locally and then update the references in the index.html page. I have tested it (and I have a python script for downloading all the external references if you are interested).