D-Net

merging trunk changes with IIS-CDH-5.3.0 branch

#1197 introducing job.properties changes aligning paths to rumcajs cluster HDFS structure

creating IIS-CDH-5.3.0 branch

#1176 updating description

#1176 introducing side products removal in multiple_input_collapser by maintaining sideproducts_removal flag

#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

#577 renaming origins to matched and ingested

#577 fixing PMC citations collapser by executing toString() on text when retrieving map value

updating job.properties