refactor of aggregation #1 new structure in place.

CRM/Dataprocessor/BAO/DataProcessor.php

CRM/Dataprocessor/Form/DataProcessor.php

CRM/Dataprocessor/Utils/Cache.php

Civi/DataProcessor/DataFlow/SqlDataFlow.php

Civi/DataProcessor/DataSpecification/AggregationField.php

Civi/DataProcessor/DataSpecification/FieldSpecification.php

...DataProcessor/DataSpecification/SqlFieldSpecification.php

...r/FieldOutputHandler/AbstractSimpleFieldOutputHandler.php

...ieldOutputHandler/AggregateFunctionFieldOutputHandler.php

...Processor/FieldOutputHandler/OptionFieldOutputHandler.php

...taProcessor/FieldOutputHandler/OutputHandlerAggregate.php

...ataProcessor/FieldOutputHandler/RawFieldOutputHandler.php

Civi/DataProcessor/ProcessorType/AbstractProcessorType.php

Civi/DataProcessor/Source/AbstractCivicrmEntitySource.php

Civi/DataProcessor/Source/AbstractSource.php

Civi/DataProcessor/Source/SourceInterface.php

sql/update1_1_0.sql

...cessor/Form/Field/Configuration/RawFieldOutputHandler.tpl

...sor/Form/Field/Configuration/SimpleFieldOutputHandler.tpl