[7.x] Create UI for alerting and actions plugin (#48959)#55093

Merged

YulNaumenko merged 1 commit intoelastic:7.xfrom YulNaumenko:backport/7.x/pr-48959

Jan 16, 2020

+11,508-15

Commits on Jan 16, 2020

Fixed merge conflicts
YulNaumenko
committed