Add link between Room and Game and between GameServiceHandler and RoomController ; Defines descriptions methods

Add class User (to store adress, port and name of users in a room and to allow to call methods of PlayerService) ; Refactoring of Game

Refactoring of several classes ; Add some converting methods ; Defines methods to manage the phases (in game.java) ; Start implementation of PowerApplicator ; Start the implementation of 'ask action' methods (also in game.java)

Add several classes and test in server ; Small add in analyse.adoc ; Small update in composant.adoc ; Upgrade the pom.xml in web

Refactor of createGame method, add several partial objects (Card, PlaceCard, Power, Score, GameFactory) and enumeration (BoardColor, BoardDistribution, Phase) ; Add some tests for createGame