stop card tap/untap animation in CardItem::resetState() to avoid unfinished animation during zone change

Added to CardInfo object and to the oracle importer. Next step is the
card info widget.

moderators can override game restrictions and kick players when spectating; game host privileges shift when host leaves

fix: don't show conceded players, fix: compute multicolumn layout correctly when dealing with odd number of players

changed chat indentation, allow leftclick for CardInfoWidget in ChatView, changed GameSelector indentation