Minor changes

[pcornelissen]

This contains updated to the libraries because the old ones did not work on my machine due to problems with the transformer. I have also added all core examples to the core demo page so they are easier accessible. (3 did not work though)

[googlebot]

Thanks for your pull request.

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[pcornelissen]

I think I've signed it before, but just to be sure, I did again ;-)

[googlebot]

CLAs look good, thanks!