Test downloading of datasets
- GalaxyWorkflowEngineTest: added checks for the GalaxyWorkflowEngine.checkWorkflowResults code, commented out the testRunWorkflow and getHiddenStaticField methods.
- DefaultWorkflowEngineFactory, WorkflowEngineFactory, GalaxyWorkflowEngine, and DummyWorkflowEngineFactory: added a historyUtils parameter to the WorkflowEngineFactory.getWorkflowEngine methods.
- FileUtils: added the createFile method, moved the createOutputFile method here (from the DemonstrationWorkflowEngine class).