* changed name for TaggedResourceType enum to ResourceObjectType as this enum is used both by ResourceMetaData and ResourceTags code
* enhanced the enum with extra fields resourceTagsSupport (boolean) and metadataSupport identifying if the resource supports tags and/or metadata.
* cleanup unused @Inject objects from the ResourceMetaDataManager
Introduction of a new Transaction API that is more consistent with the style
of Spring's transaction managment. The existing Transaction class was renamed
to TransactionLegacy. All of the non-DAO code in the management server has been
updated to use the new Transaction API.