Show sub-task flags in Detail View sub-tasks section

Both Stories and Tasks can be flagged through the context menu.

Flagged stories do not show a flag in the work tab when using Story Swimlanes. I would consider this a bug, because you can set/unset the flag using the context menu in the detail view of the work board without any visiual indication that something happend. Additionally the documentation explicitly states that the flags are visible in both planning and work tabs.

Flagged tasks are not visible in the planing board (not even in the sub-issue list in the detail view). It would be nice if it was visible even in the backlog list if an story has flagged tasks.

It would also be nice to see flags in the Sprint report.