EDIT

ref #8677: use uuid list instead of namedArea list in DistributionAggregationConfig

ref #8679 preliminary fix failing test for rank aggregation with absent status

minor

ref #8713 add test class for StructuredDescriptionAggregation

ref #8713 add test class for StructuredDescriptionAggregation

remove possibility to define aggreaged distributions on description element level

cleanup

cleanup

ref #8679 move DistributionAggregation functionality to base class

cleanup