display "last comment by" in to-do list page
It would useful to have "last comment by X" next to the "Comment (x)".
This would greatly help to see quickly if there is a comment to a to-do item made by some one else. And the "last comment by X" would link directly to its respective comment on the to-do item page.
That way if you see your own name, you know there is no new comment from some one else. Or you can jump right away to it.