Add example pages for MMM classes

src/client/components/main_layout/InstanceHomePage.js

src/client/configs/sampo/PerspectiveConfigOnlyInfoPages.js

src/client/containers/SemanticPortal.js

src/client/reducers/index.js

src/client/reducers/sampo/actors.js

src/client/reducers/sampo/collections.js

src/client/reducers/sampo/events.js

src/client/reducers/sampo/expressions.js

src/client/reducers/sampo/manuscripts.js

src/client/reducers/sampo/works.js

src/client/translations/sampo/localeEN.js

src/server/sparql/sampo/BackendSearchConfig.js

...server/sparql/sampo/sparql_queries/SparqlQueriesActors.js