D-Net

#1498 fixing unit test after adding position field in CitationEntry

#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

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

replacing icm-iis-3rdparty-pig-avrostorage with original piggybank

merging trunk changes with IIS-CDH-5.3.0 branch

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

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

#1257 renaming 'eu.dnetlib.iis.avro.map.output.value.class' property (which become obsolete) required by CollapserReducer to 'collapser.reducer.schema.class'.

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

#1135 switching icm-iis-parent-container version to 1.0.1-SNAPSHOT in order to include workingDir related changes made in icm-iis-core