When typing a comment on most objects, user gets to see a preview of the entry under the text field. The preview usually contains the author's profile image, and the image is large enough to display badges under it, like other major events in the object's timeline. So far, it's been tricky to narrow down where the preview is building the profile image html. `PHUITimelineEventView.php` seems to have part of the preview in a method called `renderExtra()`. To figure out if this task is trivial or not, it would be helpful to locate the correct code where the comment preview is built, so it's assigned to @epriestley for now, in the hopes that I can be pointed in the right direction.