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

Small refactoring in PowerApplicator (signature) ; Add tests for Conversion.java ; Add implementation of equals methods for Actions (in package action)

conception.adoc + modification PowerApplicator.java (la signature de la méthode applySurvivalCardPower) pour la CLARTÉ

# Conflicts:
#	not-alone-server/src/main/java/fr/univnantes/alma/server/game/item/planet/Planet.java

Add the last tests for the SurvivalCard Powers ; Add some correction ; Rename PowerMoificator in PowerModifier

Add the master changes in not-alone-web ; Add tests for the 10 first PlaceCards's powers (in PowerApplicatorTest)