add on_applySettingsPushButton_clicked() to JigsawSetupDialog

   *                           net name to anything they choose.

   *   @history 2018-06-01 Christopher Combs - Added support for ui changes, exclusive options and 

   *                           input validators.

   *   @history 2018-06-21 Ian Humphrey - Added on_applySettingsPushButtonClicked() to listen for when

   *                           the apply button is clicked on the observation solve settings tab.

   *                           References #497.

   */

  class JigsawSetupDialog : public QDialog {

    void on_spinRateLineEdit_textChanged(const QString &arg1);

    void on_primeMeridianOffsetLineEdit_textChanged(const QString &arg1);

    void on_applySettingsPushButton_clicked();

    public slots:

    void slotTextChanged(const QString &text);

    void checkIsValid();