Bug 1003843 - Follow up to Bug 951676 - [Messages][Refresh] Add specific image in case of more than one recipient in the list threads. r=schung

yeah, maybe. I don't recall exactly (I tried to look in the history but could not find any compelling reason).

This has been changed in https://bugzilla.mozilla.org/show_bug.cgi?id=868679 but I don't find any comment on it in the PR. Maybe we discussed on IRC but then it's been lost ;)