Next round needs to specify an event code =). We don't want just *any*
next round.
More consistent styling of the open/close/advance round buttons. The old
way of doing it was mis-sizing by a pixel.
More painfully obvious tooltips. I was worried that without the "Click
to", something like "Open round" would be interpreted as "this round is
currently open", when it was meant to tell the user the effect of
clicking.