Document/InteractionWorkflow.py: remove worklist showAsXML, because interaction workflow donesn't have worklist.

InteractionWorkflow.py: remove worklist showAsXML, because interaction workflow donesn't has worklist.

XMLExportImport.py: resolve the conflict of list/tuple type value can't be convert into text problem.

erp5_workflow_test_data: remove self.tic which may crash test; edit portal type's workflow_list directly to not trigger workfow methods at the early stage of test.