register focus on top of visibilitychange

> There might be a case there, but it's not one I'd be willing to take on. I don't think users would have two Marketplaces open nor expect us to be magic enough to refresh the other one.

I actually don't think the latter use case is that uncommon. Apple and Google are rolling out a lot of features with "do it here, resume it there."

but I can't blame you for not addressing it here, obviously.

and if you ever think there's not a user who's going to do that, think of @krupa. she's a user too!