Update 0.8613 Alpha - Important fixes

Just a quick update with important fixes of critical bugs

CHANGE LOG

Fixes

• Fixed impossibility to start a new game if you don't have a router or if a port already opened

• Fixed impossibility to start a new game after you exit to the main menu from existed game

• Fixed impossibility to load a game from menu of existed game

• Fixed an error which may cause incorrect sync of position in multiplayer