Add board scope highlight

Merged Clement Ho requested to merge add-board-scope-highlight into master

What does this MR do?

Add a blue dot and tooltip when a board scope is reduced.

Are there points in the code the reviewer needs to double check?

Check to see if the margin between the text and blue dot should be increased/decreased.

Why was this MR needed?

Improve UX

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

What are the relevant issue numbers?

Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/4067

Edited by Chris Peressini