Hide feedback that isn't useful to you on Critique

A new control on Critique responses: if you posted a submission and a piece of feedback isn't useful to you, you can now hide it from your own view with one click, and unhide it just as easily.

This is different from Report — Report is still there for feedback that actually violates our guidelines. Hiding doesn't flag anything or notify anyone; it just declutters your own feed. Nothing is deleted, and other visitors (and moderators) still see the full response.