picloud ping and fix big bugs

utils/cloud_dispatcher/cloudserver.h

@@ -15,12 +15,14 @@ public:
 	PIVector<DispatcherClient*> getClients();
 	EVENT_HANDLER0(void, printStatus);
 	const DispatcherClient * getConnection() const {return server;}
+	double lastPing();
 
 private:
 	DispatcherClient * server;
 	PIVector<DispatcherClient*> clients;
 	PIMap<uint, DispatcherClient*> index_clients;
 	PIByteArray server_uuid;
+	PITimeMeasurer last_ping;
 };
 
 #endif // CLOUDSERVER_H