Pause and show Mattertag content when they're activated while in autoplay mode
When showcase is in automatic play mode, it is now necessary to explicitly pause the autoplay (from the pause button) if one wants to read the content of a Mattertag.
Though, also in autoplay mode those nice Mattertags are very much inviting to be activated and read, at least as much as they are in normal mode.
So I propose that also also when in autoplay mode, a Mattertag can be activated (e.g. mouse over) , and the behavior to be "pause and show the balloon". And as soon as the Mattertag is no more activated (e.g. mouse out of it) the temporary pause should be released, with balloon disappearing and the tour continuing its autoplay.