LL-411 LL-410
* using new tag recommender lib v1.0
* deprecating scaffolding service operations
* replacing tag recommender ops by recommTags and recommTagsUpdate calls
* adding recommTags client service call
* updating recommConf entry in conf respectively
* updating recommender timer tasks respectively
* changed type of SSEntity.entries to List<Object> to remove problems when returning, e.g. SSUri(s), to client as such types cannot be parsed by json wrappers correctly (they dont have a getter anymore; hence strings shall be returned always; this could not be checked by having List<SSEntityA> containing SSUris potentially)