Fixed a nasty bug that could cause the whole program to crash when

changing ID filters. Made the new connection screen update to
show the set baud rates. Added the ability to set Single Wire mode on
the connection window but it actually doesn't work yet.

connectionwindow.h

@@ -31,12 +31,14 @@ public:
     int getSpeed1();
     QString getPortName(); //name of port to connect to
     ConnectionType::ConnectionType getConnectionType();
+    bool getCAN1SWMode();
 
 signals:
     void updateConnectionSettings(QString connectionType, QString port, int speed0, int speed1);
 
 public slots:
     void setSpeeds(int speed0, int speed1);
+    void setCAN1SWMode(bool mode);
 
 private slots:
     void handleOKButton();