Change all label tooltips to interactive popovers
https://gitlab.com/gitlab-org/gitlab-ee/issues/27324
Issue Moved Tointernal customer since GitLabbers use labels heavily.
Problem to solve
We currently have links included in label tooltips, which are not particularly helpful as tooltips disappear as soon as you hover outside the element.
Proposal
From @cperessini's comment in gitlab-design#282 (comment 150466105)
Edited by Gabe Weaver