Network: Add early skeleton
GameClient: Add early game client and GUI binding
Merge branch 'savegame' into raie-zo

Conflicts:
	src/fr/miage/atlantis/gui/controllers/GuiController.java
Network messages: Update with empty constructor, and board sync
Merge remote-tracking branch 'origin/raie-zo' into gui

Conflicts:
	src/fr/miage/atlantis/gui/controllers/GuiController.java