D-Net

#1498 introducing major citations related refactoring including new generic direct citation matching moved to processing phase, introduced position field in all citations schemas and updated collapser taking position into account when merging citations details coming from 3 variuos sources: fuzzy citationmatching, direct citationmatching, references metadata

#1395 WorkflowRuntimeParameters static fields cleanup, moving parameters to dedicated modules to prevent excessing icm-iis-common module modifications

#1209 introducing support for trust level thresholds provided as IIS input parameter

#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