D-Net

#1431 fixing PMC XML records parser disallowing null reference type, reference value will be simply omitted

#1383 replacing explicitly defined test cluster properties with init-test-cluster-config maven profile usage

merging trunk changes with IIS-CDH-5.3.0 branch

#1381 reintroducing yadda repository required by cermine

#1381 porting pmc citations ingestion from cascading framework to pig. Moving code from icm-iis-ingest-pmc to icm-iis-transformers including itegration tests, removing obsolete scala code along with unneded dependencies. Switching subworkflow in primary workflow.

updating job.properties

#1370 making pmc ingestion integration tests run on dedicated test cluster istead of embedded mini-oozie container

#1329 setting affiliation string as raw text if parser produced empty Element object

#1330 icm-iis-metadataextraction and icm-iis-ingest-pmc modules cermine dependency upgraded to recently released 1.6 version

#1329 adding affiliations field in ExtractedDocumentMetadata PMC schema. Metadata extraction code refactoring by extracting code responsible for building Affiliation avro records to AffiliationBuilder class and sharing it with pmc ingestion. Implementing affiliations ingestion functionality in PmcXmlHandler covered with unit tests. Adding affiliations field support in ingest pmc metadata transformer.