WIP dataset-detail.

docs/assets/webapp/dataset-detail.png

docs/assets/webapp/downloads.png

docs/components/custom-apps/web-app/credits.md

docs/components/custom-apps/web-app/dataset/api.md

.../components/custom-apps/web-app/dataset/dataset-detail.md

docs/components/custom-apps/web-app/dataset/downloads.md

docs/components/custom-apps/web-app/overview.md