#433 fixing problem with unserializable comparator: moving logic to comparable objects
setting missing new AlphaNumericCitationComparator() comparator after recent sorting related refactoring
#433 introducing natural citations ordering
#759 fixing maintaining action set identifiers in exporter module: when module does not get any input action set identifier does not have to be specified
fixing NPEx
setting confidence level to 1*factor when not specified
removing redundant code
introducing shared citation ExtraData XML model in icm-iis-common, implementing citation importer in mapred_import workflow, implementing exporter module
#433 introducing ComparableCitationEntry and TypedId model in citations, exported as sorted set XML representation
omitting 50| publication prefix when exporting citations XML BLOB
#691 introducing citations exporter module, updating exporter workflow.xml definition