D-Net

#913 renaming DocumentContentUrl#contentSize to DocumentContentUrl#contentSizeKB changing field type from int to long, importing content size from ObjectStoreFile#fileSizeKB, updating dnet-objectstore-rmi dependency from 1.0.0 to 2.0.1-SNAPSHOT

#913 supplementing json files with newly introduced DocumentContentUrl#contentSize field value set to null

#913 introducing DocumentContentUrl#contentSize field, handling it properly in all PIG transformers

#840 moving IdentifierMapping from importer to common package

#840 renaming DeduplicationMapping to more generic IdentifierMapping

adding missing affiliation fields: countryCode, address, renaming country to countryName

adding missing affiliation fields: countryCode, address, renaming country to countryName

#757 introducing doitooaid transformer processing DocumentMetadata datastore holding metadata imported from InformationSpace and creating datastore holding <doi,oaid> pairs which will be used by pmc ingestor for matching references identified by doi

null reference ids removed

updating default job.properties