[OPENENGSB-3603] added tests to EDBConverterTest and EDBIT for cascading models
[OPENENGSB-3603] fixed related checkstyle errors
[OPENENGSB-3603] fixed mocking according to OPENENGSB-3606
[OPENENGSB-3603] added license header to test resource
Merge pull request #831 from thrau/OPENENGSB-3603

[OPENENGSB-3603] added tests to EDBConverterTest and EDBIT for cascading...