ux: removing smart card does not "close" smart card key view

[martinpaljak]

When the key in a smart card is selected and the card/token is removed, the side panel updates to remove the token, but the main panel will still show the details of the key.

As the side panel is the visual cue indicating which key the details are about, maybe it would be better to reset the view to show the first key (or nothing, if there are no keys).