[apparmor] [Merge] ~u-d/apparmor-profiles:thunderbird/launcher into apparmor-profiles:master

[intrigeri]

Status update: Vincas is going to rebase my last patch on top of the current profile and resubmit – thanks! :)
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https://code.launchpad.net/~u-d/apparmor-profiles/+git/apparmor-profiles/+merge/320276
Your team AppArmor Developers is requested to review the proposed merge of ~u-d/apparmor-profiles:thunderbird/launcher into apparmor-profiles:master.