backported PidClustering from dnet50
reverted to r42370
updated to commons.lang3
introducing structured document distance response
cleanup
avoid early optimizations
configuration refactor, implemented PidMatch condition
id field can be null, equals and hashcode depend also on the fullname
introduced condition: mustBeDifferent
introduced clustering function: sortedNgramPairsdistance algo: MustBeDifferent
introduced originalId in GT model, added PersonDistance function
added case insensitive condition
added limit for the number of tokens generated from a person fullname
a list field is empty when all its members are empty
PersonDistance refinements
added lastname constraint in person distance (JaroWinkler)
added configuration for PersonDistance algo
utility methods and avoid NPEs
added support for Person objects, model, clustering, distance
MapDocument implements a more general view of the pace model
added custom conditions in the proto path navigation
removed unused method
added AlwaysMatch distance function
added person hash clustering function
added exact match distance
added ImmutableFieldValue clustering function
lower casing moved to a final cleanup stage, added more distance functions
reduced default value
do not alter the fullname
configuration refactor: jsonization
added max.children configuration param
merged from branch configurationId
merged branch ProtoMapping
refactored normalization functions, updated cleanup behavior
fixed blacklist type
added toString
extended dedup configuration, including now blacklists and algorithm parameters
removed protocolbuffers dependency from dnet-pace-core, Builders and Proto specific tests moved in dnet-openaireplus-mapping-utils, adapted dnet-mapreduce-jobs
merged from branch 1.1.0