Removing usage of working_dir from Java workflow node.
#1176 updating description
#1176 introducing side products removal in multiple_input_collapser by maintaining sideproducts_removal flag
#1133 dropping useless workfing_dir creation for java nodes
#1133 dropping useless workfing_dir creation for pig nodes
#1022 introducing PMC extracted document metadata collapser removing duplicates before sending output to PMC citation ingestion module
fixing unit tests
#577 renaming origins to matched and ingested
#577 introducing PMCCitationCollapser unit test
#577 fixing PMC citations collapser by executing toString() on text when retrieving map value
updating job.properties
#577 introducing PMC citations collapser
introducing missing record_collapser property in job.properties
memory-related properties set