more testing
added actionset id to the protoDocumentMapper, used to build the indexrecordidentifier
depending on latest pace version
added more tests
added helpers to navigate proto messages
added protobuf to solr document transformer
fixed test
merged branch ProtoMapping
revised tests
added one more test for organizations
derp changes
removed protocolbuffers dependency from dnet-pace-core, Builders and Proto specific tests moved in dnet-openaireplus-mapping-utils, adapted dnet-mapreduce-jobs
class moved to src/main/java
unit test
merged from branch 2.0.0