Improved demo case to avoid UI break
Improved demo case to avoid UI break

The task case included docs to external docs. But opening them could
"close" the page (but keeping it displayed) due to weird logic in
webbrowser, killing the sockets.

The documents are now opened in a new tab/window by default to avoid
this UI-breaking behavior.

LearnPAd/learnpad-simulator,LearnPAd/learnpad-simulator,LearnPAd/learnpad-simulator,LearnPAd/learnpad-simulator