TAJO-609: PlannerUtil::getRelationLineage ignores PartitionedTableScanNode.
TAJO-601: Improve distinct aggregation query processing.
TAJO-575: Worker's env.jsp has wrong URL which go to worker's index.jsp. (hyoungjunkim via jaehwa)
TAJO-578: Update configuration for tajo-site.xml. (jaehwa)