Add "behind-schedule" CSS class to issues
|Target version:||Candidate for next major release|
"behind-schedule" class, which is already available in gantt, indicates that the issue is behind the schedule. This means that the done ratio is lower than expected.
In gantt, "behind-schedule" issues are shown in orange color. I think also issues list and issue detail page should have "behind-schedule" class in order to be able to implement the same coloring as gantt.
It is beneficial for project management to warn before the deadline is over.