View group milestones on project milestone page
Description
When viewing the milestones page for a project, the group milestones should also be shown.
I've been grooming issues for a project 'myproject', adding issues to milestones P and G. Then, I go to /group/project/milestones, and I can't fint all the issues. One of the milestone does not even exist!
- The project view at https://gitlab.example.com/mygroup/myproject/milestones shows milestone P
- Milestone G, being a group milestone, is only visible under https://gitlab.example.com/groups/mygroup/milestones
I am in fact looking for all issues in this project that are assigned to milestone G, and I can't find an easy way to do that.
On GitLab.com, https://gitlab.com/gitlab-org/gitlab-ce/milestones does not list any milestones after 10.0, since they are group milestones. You'd be excused for believing that there are no issues assigned to later milestones, but you would also be wrong.
Proposal
I would expect the project milestones page (/mygroup/myproject/milestones) to list at least
- all milestones defined in the project, and
- all group milestones that project issues are assigned to.
It may be easier and less confusing to just list all issues available to the project, even if that then would list group milestones not currently "in use" by project issues:
- all milestones defined in the project, and
- all group milestones