Big old button on Dealer view to create new hand

Upgraded to bootstrap 3 to take advantage of responsive grid css.
Appbar no longer covers the whole top of the screen; Change over to
bootstrap navbar?
Replace hacky header navigation with bootstrap navbar

If necessary, actual navigation elements can be added later.
Prettified hand list widget

Incidentally made it easier to hit the links
Prettified bet-placing form
Unanimous notification using success alert style
Animated bars in dealer view
Added Up button to navbar in BettorView and DealerView

For ease of navigation; due to form submission, it was taking multiple
presses of the back button to return to the collection view.