Merge branch 'master' of github.com:metabase/metabase into ga-multi-aggregations

docs/administration-guide/07-segments-and-metrics.md

frontend/src/metabase-lib/lib/Alert.js

frontend/src/metabase-lib/lib/Question.js

frontend/src/metabase-lib/lib/queries/NativeQuery.js

frontend/src/metabase-lib/lib/queries/Query.js

frontend/src/metabase-lib/lib/queries/StructuredQuery.js

frontend/src/metabase/app.js

frontend/src/metabase/containers/SaveQuestionModal.jsx

frontend/src/metabase/css/core/scroll.css

...tend/src/metabase/dashboard/components/AddSeriesModal.jsx

frontend/src/metabase/dashboard/components/DashCard.jsx

frontend/src/metabase/lib/i18n-debug.js

frontend/src/metabase/public/containers/PublicQuestion.jsx

frontend/src/metabase/pulse/components/PulseListItem.jsx

frontend/src/metabase/query_builder/actions.js

...end/src/metabase/query_builder/components/AlertModals.jsx

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

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

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

...end/src/metabase/query_builder/components/QueryHeader.jsx