Delete GroupIdentifier and replace it with SpaceIdentifier.

...penbis/generic/client/web/server/CommonClientService.java

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

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

...emsx/cisd/openbis/generic/server/business/bo/SpaceBO.java

...ared/authorization/predicate/ProjectUpdatesPredicate.java

...penbis/generic/shared/dto/identifier/GroupIdentifier.java

...enbis/generic/shared/dto/identifier/IdentifierHelper.java

...enbis/generic/shared/dto/identifier/SampleIdentifier.java

...eneric/shared/dto/identifier/SampleIdentifierPattern.java

...lugin/generic/client/web/server/GenericClientService.java

...sd/openbis/plugin/generic/server/IdentifersExtractor.java

...s/generic/server/authorization/PredicateExecutorTest.java

...x/cisd/openbis/generic/server/business/bo/DataBOTest.java

...s/generic/server/business/bo/RoleAssignmentTableTest.java

...s/generic/shared/authorization/AuthorizationTestCase.java

.../generic/shared/authorization/RoleWithIdentifierTest.java

...on/predicate/DatabaseInstanceIdentifierPredicateTest.java

...hared/authorization/predicate/NewSamplePredicateTest.java

...ization/predicate/SampleOwnerIdentifierPredicateTest.java

...authorization/predicate/SpaceIdentifierPredicateTest.java