Locator combobox is not filled in the adif export widget

[ea4k]

The my_gridsquare combobox is empty and therefore no QSOs are shown and exported.

[ea4k]

Working on the AdifLoTWExportWidget::fillTable() to create a QList to be sent to MainWindow::slotADIFExportSelection2

Once MainWindow::slotADIFExportSelection2 is completed and tested, remove all code about MainWindow::slotADIFExportSelection