SP-45, BIS-21 jython v2 hook functions now don't use transaction as a parameter

...d/etlserver/registrator/JythonTopLevelDataSetHandler.java

...ver/registrator/JythonTopLevelDataSetRegistratorTest.java

...d/etlserver/registrator/all-hooks-without-post-storage.py

.../java/ch/systemsx/cisd/etlserver/registrator/all-hooks.py

...rver/registrator/testcase-postregistration-hook-failed.py

...strator/testcase-postregistration-hook-wrong-signature.py

...erver/registrator/testcase-preregistration-hook-failed.py

...registrator/testcase-registration-context-invalid-data.py

...sd/etlserver/registrator/testcase-registration-context.py