D-Net

#1212 updating taxomonies database, introducing acm taxonomy classification, introducing acm classes support in exporter module, updating integration tests

commenting out countries vocabularies existance check because export is disabled

#1315 introducing document to protein databank reference extraction outcome exporter module

#1315 propagating confidenceLevel to DocumentToConceptIds. Updating PIG transformer script by introducing concept identifiers deduplication UDF function picking record with the highest confidence level, introducing unit and integration tests. Propagating changes in document to concepts exporter module.

#1257 dropping schema generation related hacks in all map-reduce modules, switching to literal schema parameters

Removing usage of working_dir from Java workflow node.

imports cleanup

#118 fixing web usage similarity exporter module

#118 bugfix: shortening node name exceeding 50 chars

#118 enabling document-websiteusage-similiarity exporter module in exporter workflow definition