Add ClientFS functionality from NameSampo

package-lock.json

package.json

src/client/components/facet_bar/DatasetSelector.js

src/client/components/facet_bar/FacetBar.js

src/client/components/facet_bar/FacetInfo.js

src/client/components/facet_bar/HierarchicalFacet.js

src/client/components/facet_bar/LeafletMapDialog.js

src/client/components/facet_bar/SearchField.js

src/client/components/facet_results/CSVButton.js

src/client/components/facet_results/LeafletMap.js

src/client/components/facet_results/Pie.js

src/client/components/facet_results/ResultInfo.js

src/client/components/facet_results/VirtualizedTable.js

src/client/components/main_layout/MainCard.js

src/client/components/main_layout/TopBar.js

...t/components/perspectives/sampo/client_fs/ClientFSMain.js

...nents/perspectives/sampo/client_fs/ClientFSPerspective.js

src/client/configs/sampo/PerspectiveConfig.js

src/client/containers/SemanticPortal.js

src/client/img/main_page/bg2.jpg