For the following notification types, we'd like to add a secondary link to the user page (with the label being the user name and the icon being `userAvatar`) of the agent to serve as a signature of sorts: a consistent way to indicate who performed the action you're being notified about. Where this secondary link is present, it should always be the first secondary link.
Notification types:
[ ] edit-user-talk (https://gerrit.wikimedia.org/r/260587)
[ ] reverted (https://gerrit.wikimedia.org/r/260587)
[ ] mention (https://gerrit.wikimedia.org/r/260587)
[ ] user-rights (https://gerrit.wikimedia.org/r/260587)
[ ] emailuser (https://gerrit.wikimedia.org/r/260587)
[ ] flow-new-topic (https://gerrit.wikimedia.org/r/260589)
[ ] flow-post-reply (https://gerrit.wikimedia.org/r/260589)
[ ] flow-post-edited (https://gerrit.wikimedia.org/r/260589)
[ ] flow-topic-renamed (https://gerrit.wikimedia.org/r/260589)
[ ] flow-mention (https://gerrit.wikimedia.org/r/260589)
[ ] edit-thank (https://gerrit.wikimedia.org/r/#/c/260590/)
[ ] flow-thank (https://gerrit.wikimedia.org/r/#/c/260590/)
[ ] All PageTriage notifications
[ ] All EducationProgram notifications
[ ] All OpenStackManager notifications