action selection dialog: don't waste space.
action selection dialog: don't waste space.

Vertically pack the action selection buttons as close as they were before
fc7c9abb02af8c0087d29317e0930e28036f3da4.

andreasrosdal/freeciv-web,adaxi/freeciv-web,adaxi/freeciv-web,adaxi/freeciv-web,andreasrosdal/freeciv-web,andreasrosdal/freeciv-web,adaxi/freeciv-web,andreasrosdal/freeciv-web,adaxi/freeciv-web,andreasrosdal/freeciv-web