Merge branch 'master' into driver-schema-support

.gitmodules

frontend/src/admin/databases/components/DatabaseList.jsx

frontend/src/components/DashboardsDropdown.jsx

frontend/src/components/Header.jsx

frontend/src/components/HistoryModal.jsx

frontend/src/dashboard/components/DashboardHeader.jsx

frontend/src/lib/schema_metadata.js

frontend/src/query_builder/DataReferenceTable.jsx

frontend/src/query_builder/DataSelector.jsx

frontend/src/query_builder/QueryHeader.jsx

...src/query_builder/QueryVisualizationObjectDetailTable.jsx

frontend/src/query_builder/QueryVisualizationTable.jsx

frontend/test/unit/lib/schema_metadata.spec.js

src/metabase/config.clj

src/metabase/core.clj

src/metabase/driver.clj

src/metabase/driver/generic_sql.clj

src/metabase/driver/generic_sql/native.clj

src/metabase/driver/generic_sql/query_processor.clj

src/metabase/driver/mysql.clj