wheel: much smoother auto-rotate animation
game: play sound on hint shown
sounds: increase base volume for all sound effects
wheel: recalculate isvalid for current stone, when new stone selected on wheel
currentStone: remove unwanted placeing of stones when selected from wheel
currentStone: tine current stone according to status
currentStone: reduce rotation of stone effect on commit

previous angle of 15 degree looked ugly, reduced to 8 degrees for stoneRollEffect