Implemented senidng of player name

-Player name is now sent during startup.
-When recieving a player name, the renderer is updated to display the
recieved player named.
IP and port is now set in InitNetManager()

-InitNetManager() now sets port and IP and stores it in GameManager.
-IP and port is now longer hard-coded.
Fix build with one client not having a flipped board

-Added code that sets isServer in BoardLoader when starting/joining a
game.