Re-naming class And package:
- package Entites ren-amed -> entites
- package Services ren-amed -> services
- Poker class renamed -> Dealer
- PokerConstants class re-named -> DealerConstants

Description:
I have re-named that just about a logic aim.
I will change the server class into PokerRoom class.
The concept is the following:
The server class is the first door to the poker application.
When a user is connecting to the server, he must wait a number of players
to begin the game (the default number players is 3).
When 3 players are connected, the server instances a PokerRoom implementing the Runnable class.
Thank's to the PokerRoom class the poker server can, after initialized a PokerRoom, wait
3 others players to open an other PokerRoom and so on.
The Server class manages just the entry of users and towards them to a PokerRoom
( it's like the first door of the casino).

The aim of the PokerRoom is to manage the game and dialog with the users.
This class formats the datas send to the client application and the datas send by the client application