Merge pull request #6730 from metabase/data-selector-multi-step

frontend/src/metabase/query_builder/actions.js

...nd/src/metabase/query_builder/components/DataSelector.jsx

.../src/metabase/query_builder/components/GuiQueryEditor.jsx

...c/metabase/query_builder/components/NativeQueryEditor.jsx

...query_builder/components/template_tags/TagEditorParam.jsx

...ery_builder/components/template_tags/TagEditorSidebar.jsx

frontend/src/metabase/redux/metadata.js

...d/src/metabase/reference/components/GuideDetailEditor.jsx

frontend/src/metabase/reference/reference.js

frontend/src/metabase/services.js

frontend/test/parameters/parameters.integ.spec.js