#1212 fixing typo: dccclasses->ddcclasses in taxonomies.db
#1212 updating taxomonies database, introducing acm taxonomy classification, introducing acm classes support in exporter module, updating integration tests
#1257 dropping schema generation related hacks in streaming modules, switching to literal schema parameters
#1133 dropping useless workfing_dir creation for streaming nodes
#720 fixing document classification algorithm confidence level distribution, switching mainworkflows pom dependency to the fixed document classification snapshot
updating default job properties