Added JaCoCo for code coverage
- pom.xml: added the JaCoCo Maven plugin to determine the code coverage of the unit tests.
Also a few other changes:
- Copied HistoryUtilsTest and WorkflowUtilsTest classes from v1 to v2.galaxy package.
- Created first version of the GalaxyWorkflowEngineTest class (to be completed).
- Added TestWorkflow.ga for the GalaxyWorkflowEngineTest.
Merge remote-tracking branch 'remotes/origin/master'