D-Net

#1212 updating null taxonomy test expected results after fixing typo: dccclasses->ddcclasses in taxonomies.db

#1212 fixing typo: dccclasses->ddcclasses in taxonomies.db

#1370 making documents classification integration tests run on dedicated test cluster istead of embedded mini-oozie container

merging trunk changes with IIS-CDH-5.3.0 branch

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

removing oozie-sharelib-distcp dependency from pom.xml file and relying on oozie.use.system.libpath=true set among job.properties

#1257 merging changes to iis-cdh-5.3.0 branch: raising oozie.action.max.output.data to 8192

#1257 merging schema related changes to iis-cdh-5.3.0 branch

#1257 raising oozie.action.max.output.data to 8192

#1257 dropping schema generation related hacks in streaming modules, switching to literal schema parameters