If a MaximumKPICalculationStrategy or AggregationKPICalculationStrategy has only empty children we set the KPI itself to empty.  This is done by throwing an error which should be caught when calculating the KPI

The actuator endpoint uses the application's management port, which is a new environment variable

updated execution script

ATTENTION: added setting for dev deployment to always create-drop the database to have a clean test start

Reworked KPI calculation. Added first error handling and tests. Added new API query system. ATTENTION: ORT URL currently hardcoded for repository id 106 due to test setup