Nicer post-trick animations

[ADBond]

Improving animations when tricks are won and cards go to their destinations:

• rotate cards so they are 'right-way-up' to the person they are heading to
• cards to the trick-pile get 'flipped' to face-down
• stagger animation of each card of the trick to help display what's occuring

[ADBond]

This has highlighted some brittleness in how I've been dealing with sequential animations, so will need to rejig how things are handled. Most likely will use existing methods to manage a queue instead of playing animations, and then a final notification that just executes the queue

[ADBond]

Keeping the splitting up of calypso complete logic / fresh cards thing as I think it is a bit clearer what's going on, and gives me the option of going back if needed