Add flow annotations

Fix typo on Data Reference getting started page

Tweak stacking settings logic. 

Use ResizeObserver ponyfill for ExplicitSize HOC

Update FAQ. Fix typo of MariaSQL to MariaDB

Use ResizeObserver ponyfill for ExplicitSize HOC to ensure it updates the size in all cases, not just window resizes

Add ESLint import plugin

Make icepick imports consistent

Correct grammar/spelling

* the past participle of 'run' is 'run', not 'ran'.

* ensure our css is always more specific than vendor

* set dc axis text to valid sans-serif value

* Add missing newline in users-guide/09-pulses.md

Missing newline causes text rendered on metabase.com docs site to be in a paragraph instead of a bulleted list. It looks fine on GitHub though.

* Add missing newline in admin-guide/03-metadata.md

Missing newline causes text rendered on metabase.com docs site to be in a paragraph instead of a bulleted list. It looks fine on GitHub though.

* Fix link in admin-guide/10-sso

Link at the bottom of the page pointed to old number for the getting-started-guide

Merge pull request #4117 from metabase/more-backported-improvements-from-public-cards-and-dashboards

Backported cleanup from public cards & dashboards branch 

Fix rare "device" busy error when building DMG  [ci skip]

Fix source maps and update frontend dependencies

Merge release-0.22.0 to master

Code cleanup 

Header modal z-index

Merge release 0.22.0

Fix past relative date ranges

Merge branch 'master' of github.com:metabase/metabase into update-frontend-deps-and-devtool [ci e2e]

Use new driver/format-custom-field-name method in tests [ci drivers]