* refactor(dashboard): remove redundant directive code from SaveDashboardAsButton

* feat(dashboard): initial commit of rendering version history with react

* feat(dashboard): append versions, use historySrv, UI as functional components

* feat(dashboard): initial commit of versions settings diff view

* refactor(historylist): remove code related to listing versions

* refactor(dashboard): use angular directive to render version comparison

* refactor(dashboard): clean up versions settings

* refactor(dashboard): move version history UI components into own files

* refactor(dashboard): update typings for version history react components

* feat(dashboard): initial commit of react revert dashboard modal

* test(dashboardsettings): clean up historylistctrl tests

* chore(dashboardsettings): remove unused state variable

* test(dashboardsettings): initial commit of VersionSettings component tests

* feat(grafana-ui): add className concatenation on Checkbox label

* Apply suggestions from code review

Co-authored-by: Dominik Prokop <dominik.prokop@grafana.com>

* test(dashboardsettings): add more tests for Versions Settings react component

* test(dashboardsettings): add test to assert latest badge in Version history table

* fix(dashboardsettings): pass string to getDiff instead of react event object

* test(dashboardsettings): remove failing test from versions settings

* Moved scroll area to content, and fixed colors

* Update public/app/features/dashboard/components/DashboardSettings/VersionsSettings.test.tsx

Co-authored-by: Dominik Prokop <dominik.prokop@grafana.com>

* style(dashboardsettings): add new lines to versions settings tests

Co-authored-by: Dominik Prokop <dominik.prokop@grafana.com>
Co-authored-by: Torkel Ödegaard <torkel@grafana.com>