JbpmBpmn2TestCase.tearDownClass method incorrect order of method logic

JbpmBpmn2TestCase.tearDownClass method contains logic that frees resources used in test case. But it is in wrong order. The data source should be closed and the server stopped after all other resources are handled (i.e. transactions), not at the beginning.

I created a pull request for this: https://github.com/droolsjbpm/jbpm/pull/237