[FEAT] Make it obvious a file has a discussion

[squarepeg]

I just discovered that you can click the gear beside any orchestral part, and choose "Discuss this file".

It would be extremely useful to use this to mention typos, missing bars (etc) for a part...however it should be painfully obvious on the parent page that the file has a discussion.

Example: I added a footnote for this part.

If you look at the parent page, I feel it would be nice to make it painfully obvious I entered this. Could we have a clickcable link for the discussion beside the part's page-count/star-rating/download-count is shown?

[bkinmonth]

I would like to second this request. It would be great if there was some visual indicator showing if a file had a discussion. But... what I really came here to ask for was an indication that there was a discussion for a piece (or page). I realize that you can currently hover over the gear icon next to a file, and see the "Discuss this file" count, and you can also hover over the Page menu at the top of a page and see the "Discuss this piece" count. But few people are likely to hover over all these things to see if any interesting discussions are happening. It would be really nice if there were discussion indicators. It would also make sense that clicking on the indicator would take you to the discussion page.