Show orphan comments

[jerry-wolf]

If someone deletes a post, then we can't see the comments under this post, but it still takes up space. So I think ZeroMe needs a way to see orphan comments.

[owintwist]

Listing orphan comments is a good way to have a chance to not loose them. But adding a delayed auto-remove is a good way too : if a comment is orphan from long time (about 3~6 month) it will be removed.