Initial commit where connection window is active and it is possible to

connect to GVRET but this time through the connection window and the
menu option "Connect".

connectionwindow.h

@@ -33,11 +33,14 @@ public:
     ConnectionType::ConnectionType getConnectionType();
 
 signals:
-    void updateConnectionSettings();
+    void updateConnectionSettings(QString connectionType, QString port, int speed0, int speed1);
 
 public slots:
     void setSpeeds(int speed0, int speed1);
 
+private slots:
+    void handleOKButton();
+
 private:
     Ui::ConnectionWindow *ui;
     QList<QSerialPortInfo> ports;