D-Net

throwing exception when mdstoreid or mdstore service location set to $UNDEFINED$ value

throwing exception when actionsetid set to $UNDEFINED$ value

introducing shared citation ExtraData XML model in icm-iis-common, implementing citation importer in mapred_import workflow, implementing exporter module

adding junit dependency for unit tests

introducing citations xstream deserialization tests

introducing hashCode and equals method

introducing CitationsXmlConverter unit test

updating main method introduced for testing purposes

updating main method introduced for testing purposes

#433 introducing ComparableCitationEntry and TypedId model in citations, exported as sorted set XML representation