pgp encrypted message are mostly marked as application/octet-stream
Summary:
We can autodetect if, the content of an mimepart is pgp encrypted.
BUG: 324365
FIXED-IN: 17.12.0
Test Plan: make sure, that attatchment are still handled as attachments and not as "normal" text.
Reviewers: vkrause
Subscribers: KDE PIM
Tags: KDE PIM
Differential Revision: https://phabricator.kde.org/D8554