Installed.
Suggestions:
1) If a user replies to thread that has been asnwered, allow them to check something that says "This is a question" so that the post goes back to being unanswered (and so that experts will check it again :glasses: )
2) Allow the same people who can mark threads as answered to mark answered threads as unanswered (I didn't find an option to do this).
Great job!