IService, ServiceBase : added method findWithoutFlush

IService, ServiceBase : added method findWithoutFlush
CdmCacher, CdmDaoCacher : split CdmCacher class to sub class which uses dao to access the data
MockCdmCacher : added mock cdm cacher for tests
TaxonNodeServiceImplTest, FeatureNodeServiceImplTest : removed duplicate @SpringApplicationContext annotation
IdentifiableServiceBaseTest, TaxonServiceSearchTest : reverted @Ignore on failing tests
TaxonServiceSearchTest : added mock cdm cacher
SecurityTest : removed duplicate PlatformTransactionManager autowiring
CdmCacherTest : extended test