Merge pull request #7315 from r-kot/feature_3847

frontend/src/metabase/components/DownloadButton.jsx

frontend/src/metabase/components/EntityMenuItem.jsx

frontend/src/metabase/components/Triggerable.jsx

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

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

frontend/src/metabase/lib/urls.js

...metabase/query_builder/components/QueryDownloadWidget.jsx

...d/src/metabase/visualizations/components/LegendHeader.jsx

...end/src/metabase/visualizations/components/LegendItem.jsx

.../src/metabase/visualizations/components/Visualization.jsx

frontend/test/dashboard/DashCard.unit.spec.js

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

src/metabase/api/embed.clj