D-Net

#1302 introducing support for updated project model containing funding tree defined as XML instead of JSON, not enabled yet.

#1195 removing obsolete ports docreation and datasetid from hbase mapred import, removing references to those ports in workflow.xml files, updating transformer by removing filtering by datasetid due to decisions made in #1072

#1109 fixing building excluded acronym values

#1109 making isAcronymValid() method public so it could be utilized by relational db importer as well

#1109 making isAcronymValid() method public so it could be utilized by relational db importer as well

#1109 introducing support for multiple acronym values to be skipped, currently set to 'unknown' and 'undefined' values.

bugfixing citations converter by prefixing identifier with 50| prefix which was removed when exporting destination document id in BLOB exporter

fixing NullPointerException in citations exporter

#840 moving IdentifierMapping from importer to common package