[LMS-2500] allow to access all well properties via the public screening API

...stemsx/cisd/openbis/generic/shared/util/EntityHelper.java

...creening/client/api/v1/ScreeningOpenbisServiceFacade.java

...cisd/openbis/plugin/screening/server/ScreeningServer.java

...penbis/plugin/screening/server/ScreeningServerLogger.java

...bis/plugin/screening/server/logic/PlateContentLoader.java

...enbis/plugin/screening/server/logic/ScreeningApiImpl.java

...s/plugin/screening/shared/api/v1/IScreeningApiServer.java

.../openbis/plugin/screening/shared/api/v1/dto/Material.java

...is/plugin/screening/shared/api/v1/dto/PlateWithWells.java

...cisd/openbis/plugin/screening/shared/api/v1/dto/Well.java