Show number of comments on an item

[Eilon]

[Eilon]

Use glyphicon glyphicon-comment.

[Eilon]

Seems to be a bug (or GitHub API limit) that PRs always have a comment count of 0. Issues work fine.

[Eilon]

Turns out you need to make an extra request for every PR to get its comment count, and another separate request to gets its review comment count.