#7883 Be able to show/hide "metadata" ticket comments
All posts have an is_meta boolean field. Tickets and merge requests currently set that for automatic comments about field changes. It would be useful to have a UI to show only comments, only changes, and all activity. This would be an option that we'd only use for tickets right now but could be turned on for other threaded discussions in the future if the tool starts to use is_meta for their posts.
I'm not sure the best approach to updating the page, especially with regards to pagination. It'd be nice for it to be fast, not a full page reload. Maybe ajax, but that'd require building a new endpoint. Perhaps useful to help [#5709] though.