* added column action status code to RolloutGroupTarget view, currently bug too many rows
* changed JPA query to return also action status code
* added repository tests
* additional checks in tests
* improved jpa query to retrieve targets of rollout group
* added new property lastActionStatusCode to action for performance reasons
* added new property lastActionStatusCode to action for performance reasons
* adapted test cases
* fixing build problems on MAC with asciidoctor
* added testcase to ensure action status code is stored on action
* setting min push size to this value reduces multiple calls to the db
* renamed properties for consistency
* incorporated code review remarks
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