Fix for bug 97764: Fixes errant sending of mail on attachment changes to users who do not want to receive mail about their own changes.
Patch by Jake <jake@acutex.net>.
r=myk@mozilla.org; no second review needed.

Fix for bug 84338: initial implementation of attachment tracker, which lets users flag attachments with statuses.
Patch by Myk Melez <myk@mozilla.org>
r=justdave@syndicomm.com