* Add metrics to get issues by label * Add comment on IssueByLabelCount * Code review - Unify "AS" in SQL (#17201) * Code review - Remove useless join (#17201) * Code review - Disable issue_by_label by default in settings (#17201) * use e * restore empty line * update docs Co-authored-by: 6543 <6543@obermui.de> Co-authored-by: techknowlogick <matti@mdranta.net> Co-authored-by: techknowlogick <techknowlogick@gitea.io>