corrected duplicate methods and unimplemented method issue
Merge branch 'master' of wp5.e-taxonomy.eu:/var/git/cdmlib into remoting-4.0
Conflicts: cdmlib-model/src/main/java/eu/etaxonomy/cdm/model/common/DefinedTerm.java cdmlib-model/src/main/java/eu/etaxonomy/cdm/model/name/NonViralName.java cdmlib-services/src/main/java/eu/etaxonomy/cdm/api/service/INameService.java...
changes for #3998
delete method returns DeleteResult
ICdmCacher, ICdmUuidCacher, CdmCacher, CdmTermCacher : refactored and added load method Language, NameRelationshipType, Rank : now uses cacher only if termap is null or empty and only when class matches the specific term type MockCdmCacher: not required anymore...
add deletion of polytomouskeynodes
splitting PolytomousKeyNodeService from PolytomousKeyService & more methods for IdentificationKeyService