use HashMap, HashSet instead of the Tree* classes that require Identifier objects implement Comparable
configuring hazelcast tests
do not add obsoletes and obsoletedBy elements if their values are null (jibx chokes on the emptiness)
use both guid and docid when creating access row - then either mechanism can be used when retrieving the access rules
check for null session before looking at subject
further refactoring and start of unit tests for hazelcast elements
use pending replication task queue to check if node is authorized for replication. moved from old ReplicationService code
save system metadata and/or science metadata and/or ORE objects to the local CN if needed.
small code cleanup - removed unused instantiations of DBUtils.
fixed logic wrt localID and docid. Implemented new method in IdentifierManager to getAllGUIDs from identifier table for implementation of loadAllKeys in ObjectPathMapLoader.
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