Merge branch 'query-lib' into multi-metrics-proto

frontend/interfaces/underscore.js

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

frontend/src/metabase-lib/lib/Dimension.spec.js

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

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

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

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

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

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

frontend/src/metabase-lib/lib/metadata/Database.js

frontend/src/metabase-lib/lib/metadata/Table.js

frontend/src/metabase/dashboard/selectors.spec.js

frontend/src/metabase/lib/analytics.js

frontend/src/metabase/lib/expressions/parser.js

frontend/src/metabase/lib/permissions.js

frontend/src/metabase/lib/query/limit.js

frontend/src/metabase/lib/query/query.js

frontend/src/metabase/lib/query/query.spec.js

frontend/src/metabase/meta/types/Table.js

frontend/src/metabase/meta/types/Visualization.js