Persist background color for expanded sidebar menu items
requested to merge gtsiolis/design.gitlab.com:gt-persist-background-color-for-expanded-sidebar-menu-items into master
What does this MR do?
This is using the directive used (open) in https://gitlab.com/gitlab-org/design.gitlab.com/merge_requests/168/diffs#a00c00213f837ad50222f2d8f5815be7a7f50352_50_88.
What are the relevant issue numbers?
Fix #191 (closed)