Fixed this on the branch by hiding comments and activity items. I was going to physically change their statuses to match their corresponding post, but simply hiding them from view is easier and safer, especially if a post is set from new to buried, then back to new. Hiding them is fine, though there is one very minor glitch, e.g. if 2 of the last 10 comments are hidden, you can only see 8 comments in the widget instead of the usual 10 because only 10 were pulled from the database to begin with.

Updating tickets (#83, #92, #95, #97, #123, #80, #84, #86, #87, #93, #102, #103, #107, #109, #112, #115, #116, #117, #69, #79, #85, #89, #90, #94, #108, #111, #118, #119, #122, #73, #100, #101)