Added TileSpawn and LastTileSent message

-TileSpawned is used to send a Tile ( pos and type ) from server to
client
-LastTileSent is used sent when the last Tile has been sent from server, maning the client should calculate scale
Changed BoardManager code

-TilePosition now useds a Vector2f, according to the new policy of using
Vector2f for positions.
-Board is only generate for server, so everything related to
client-specific code has been removed. The Board will not get flipped
while loadeing but in PhysicsManager ( to be done )
Increased message buffer size

-Message buffer was too small, the message system go flooded when
sending Tiles
-Buffer size is now 80 000, which should be more than long enough

TODO:
-Find out if there is a better way of dealing with messsage flodding.
Changed Board generateion

-Board is now only generated on client side
-Board is then sent to oponent using the new TileSpawned message
-PhysicsManager now handles scaling ( scale has been remove from Gameanager
-New level is only initiated from server, removed isOponentDoneWithLeveli
-Removed LevelDoneMessage