[LMS-2087] Eager archiving (part 2 - incomplete and untested)

...msx/cisd/openbis/dss/generic/server/DataStoreService.java

...sd/openbis/dss/generic/server/DataStoreServiceLogger.java

...penbis/dss/generic/server/EncapsulatedOpenBISService.java

...d/openbis/dss/generic/server/IDataSetCommandExecutor.java

...openbis/dss/generic/server/plugins/demo/DemoArchiver.java

...er/plugins/standard/AbstractArchiverProcessingPlugin.java

...is/dss/generic/server/plugins/standard/RsyncArchiver.java

...s/generic/server/plugins/tasks/ArchiverPluginFactory.java

...bis/dss/generic/server/plugins/tasks/IArchiverPlugin.java

...dss/generic/server/plugins/tasks/PluginTaskProviders.java

...enbis/dss/generic/shared/IEncapsulatedOpenBISService.java

...s/generic/shared/QueueingDataSetStatusUpdaterService.java

...penbis/dss/generic/shared/dto/DataSetCodesWithStatus.java

...msx/cisd/openbis/generic/server/AbstractCommonServer.java

...a/ch/systemsx/cisd/openbis/generic/server/ETLService.java

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

...sd/openbis/generic/server/business/bo/ExternalDataBO.java

...openbis/generic/server/business/bo/ExternalDataTable.java

...d/openbis/generic/server/business/bo/IExternalDataBO.java

...penbis/generic/server/business/bo/IExternalDataTable.java