GameData :
[*] GameMode : Quests
[*] GameInformationLoaderFromFile : optimisation of the Quest datas loader.
[*] SpiesQuest : made attributes private, added some getters.
GameCore :
[*] GameLauncher : no changes (tests that I deleted), commited anyway.
externalFiles:
[+] SpiesAndGuards.quests : added this file, contains quests. To be modified later.