OZG-2566 OZG-2684 do not map version in bodyObject; tiny refactoring

...java/de/itvsh/goofy/common/command/CommandBodyMapper.java

...java/de/itvsh/goofy/common/command/CommandController.java

...a/de/itvsh/goofy/common/command/CommandRemoteService.java

...in/java/de/itvsh/goofy/common/command/CommandService.java

.../java/de/itvsh/goofy/postfach/PostfachMailController.java

.../de/itvsh/goofy/common/command/CommandBodyMapperTest.java

.../de/itvsh/goofy/common/command/CommandControllerTest.java

...est/java/de/itvsh/goofy/common/command/CommandITCase.java

.../itvsh/goofy/common/command/CommandRemoteServiceTest.java

...ava/de/itvsh/goofy/common/command/CommandServiceTest.java

...vsh/goofy/postfach/PostfachMailCommandControllerTest.java