LMS-2146 DisplaySettings extended. Joining of visits handled.

.../client/application/framework/DisplaySettingsManager.java

...nbis/generic/client/web/server/AbstractClientService.java

...ric/client/web/server/WebClientConfigurationProvider.java

.../systemsx/cisd/openbis/generic/server/AbstractServer.java

...msx/cisd/openbis/generic/shared/AbstractServerLogger.java

...java/ch/systemsx/cisd/openbis/generic/shared/IServer.java

...isd/openbis/generic/shared/basic/dto/DisplaySettings.java

...sx/cisd/openbis/generic/shared/basic/dto/EntityVisit.java

...nbis/generic/shared/basic/dto/WebClientConfiguration.java

...is/generic/client/web/server/CommonClientServiceTest.java

...ystemsx/cisd/openbis/generic/server/CommonServerTest.java