Mail to ticket automation: update to reflect Combodo's changes (3.0.7 to 3.0.11)

[jbostoen]

Update our forked extension to match code changes from Combodo's official version 3.0.7 to 3.0.11 . Document most important changes/new features below.

[jbostoen]

Combodo change log (and checklist of what we'll try to implement)

• [x] Some attachments were considered as inline images when content-disposition was not specified correctly, this caused some attachments to be invisible in iTop because nothing referenced them in the body of the message.
• [x] SPAM messages have a separate flag 'undesired' and have a delay to be automatically deleted.
• [ ] A reply can be sent in case of 'Unknown caller' error.
• [x] BLOCKQUOTE tag is now allowed in HTML fields.
• [ ] An generic email reply can be sent in case of 'Unknown caller'.
• [ ] Update Russian translation.
• [x] Allow trigger to filter with an OQL.

Strangely enough, version now jumped from 3.0.7 to 3.0.11 (but 3.0.8 in files)

---

More info needed:

• what's Combodo's definition of SPAM? Currently, we're treating UNDESIRED as violating one of the policies configured by the user.
• unknown caller -> handled by our policies already

---

EmailProcessor class: OnPolicyViolation now returns MARK_MESSAGE_AS_UNDESIRED rather than MARK_MESSAGE_AS_ERROR

[jbostoen]

Implementing setting: undesired-purge-delay. Would rather have had this setting in the datamodel per mailbox, but since it's used in a PHP class as well, we're sticking with the Combodo implementation.

• [x] Refactored our method PolicyCompliant to match Combodo's newly introduced IsUndesired
• [x] Some mark_as_error options are now mark_as_undesired . This would require an upgrade note!
• [x] Changed trace to show most recent info on top (lazy but makes more sense)
• [x] Add bounce and mark as error ( alternative to bounce_delete )