Improved attachment file selection
Use the QtQuick.Dialogs dialog for selecting files. Also, esp. for Android, derive file name suffixes from the mimetime of the file, in case we cannot get it from the input file name.
Closes #438 (closed)
Use the QtQuick.Dialogs dialog for selecting files. Also, esp. for Android, derive file name suffixes from the mimetime of the file, in case we cannot get it from the input file name.
Closes #438 (closed)