Pretty intrusive changes. I've changed the messageview part to always use richtext mode. All html messages will be escaped, so that should work ok. I did this so I can make links and emailaddresses clickable. Which is in this commit as well. Enjoy! mailto's will launch the composer of Mailody (_not_ the default KDE Mailer) and links will launch the default KDE browser. The used regexes seem to work ok.

When replying or forwarding the plaintext part will be set in the composer, even if you are viewing the message in HTML mode.

Closing the composer will only warn 'are you sure' when there has been a change to the composer. So you can reply and abort immediatly without getting a warning.

Please test for regressions...