Combine people and organizations into actors perspective

src/client/components/main_layout/Main.js

src/client/components/main_layout/TopBar.js

src/client/components/perspectives/Actors.js

src/client/containers/SemanticPortal.js

src/client/reducers/actors.js

src/client/reducers/actorsFacets.js

src/client/reducers/index.js

src/server/sparql/FacetConfigs.js

src/server/sparql/FacetResults.js

src/server/sparql/SparqlQueriesActors.js

src/server/sparql/SparqlQueriesOrganizations.js