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Add margin at top and bottom of players pieces
Remove MANIFEST file
Play a sound when a piece is placed
Wait 2 seconds when the player changes

This cange make easier to the player see what piece is put
by the automatic player, and make feel the game more real.
Make the automtic player wait one second when request one piece

To fix the drawing of the pieces when are requested
the logic done to request one piece is moved from the player to the game
Move the logic to check the end of game to the game class

There are a problem with the end of game control when both players pass
Comment debug logging
If the automatic player pass, show a message
Consolidate the logic controling the state of pass and add buttons

Now all the logic is in the activity class.