Install forms for InfoPath msg classes.
* forms/gpgol-form-encrypted.cfg, forms/gpgol-form-signed.cfg: New. * src/olflange.cpp (install_forms): Install new forms. * src/mimemaker.cpp (finalize_message): Use InfoPath msg classes.
This fixes that Outlook shows all our Mails as S/MIME signed
because we set the S/MIME message class when sending to enable
the behavior that it takes the MIME structure from the first
attachment.
It also fixes the display of reverted mails which was previously
wrong.