some qt work. fixed on slow computers; now faster as delayed save is implemented

qt/i2pd_qt/TunnelPane.h

@@ -41,6 +41,8 @@ public:
     virtual ServerTunnelPane* asServerTunnelPane()=0;
     virtual ClientTunnelPane* asClientTunnelPane()=0;
 
+    void deleteWidget();
+
 protected:
     MainWindow* mainWindow;
     QWidget * wrongInputPane;