PutCard renamed to Turn
Implemented some game logic: function to check if a turn was valid
Implemented some game-logic related functions in CardStorage.
Function randomPick returns no more Card, only arrays
Function randomPick now using card_id as key in the return array.
Added constant RULE_BURN_COUNT
Implemented function getCards
Refactored Turn input and output packets
Implemented functions for game logic
Implemented function getPlayerById
Implemented most game logic