Merge branch 'master' into sync-3.9

frontend/test/__runner__/empty.db.mv.db

frontend/test/__runner__/test_db_fixture.db.h2.db

frontend/test/query_builder/qb_editor_bar.integ.spec.js

frontend/test/setup/signup.integ.spec.js

src/metabase/api/field.clj

src/metabase/driver/druid.clj

test/metabase/api/field_test.clj

test/metabase/api/table_test.clj

test/metabase/driver/druid_test.clj

test/metabase/timeseries_query_processor_test.clj

test/metabase/timeseries_query_processor_test/util.clj