Synchronize on network game start, so that everyone has received all avatars and player names before the game starts. Store all computer players in a separate list on the server for name retrieval.

src/net/sessionmanager.h

@@ -64,6 +64,7 @@ public:
 	bool IsPlayerConnected(unsigned uniqueId) const;
 
 	void ForEach(boost::function<void (SessionWrapper)> func);
+	unsigned CountReadySessions() const;
 
 	void Clear();
 	unsigned GetRawSessionCount();