PR #71 added a dialog to select an application certificate.
Closing this dialog resulted in a crash of the software because of a missing import statement.
This PR adds the import of QDialog from PyQt5 to the respective file and thus fixes this error.
PR #71 added a dialog to select an application certificate. Closing this dialog resulted in a crash of the software because of a missing import statement. This PR adds the import of QDialog from PyQt5 to the respective file and thus fixes this error.