EE: Backport StackedProgressBar component from GitLab EE
What does this MR do?
EE port for https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/16457
Does this MR meet the acceptance criteria?
[ ] Changelog entry added, if necessary[ ] Documentation created/updated[ ] API support added-
Tests added for this feature/bug - Review
[ ] Has been reviewed by UX-
Has been reviewed by Frontend [ ] Has been reviewed by Backend[ ] Has been reviewed by Database
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Conform by the merge request performance guides -
Conform by the style guides -
Squashed related commits together [ ] Internationalization required/considered[ ] If paid feature, have we considered GitLab.com plan and how it works for groups and is there a design for promoting it to users who aren't on the correct plan