Automatically serialize operations during testing

[DavidLeoni]

Most of problems when saving project or when reapplying operations (i.e. Error while reconstructing operation!) are due to failed serialization. In order to better test it, we should automate serialization in our testing framework, so operations are automatically serialized when performed.
Unfortunately, to enable this we need to modify Refine core, which might be hard to do - This is why PipelineTest.testImpiantiDiRisalitaWithOperationJson() is currently marked as broken.

[DavidLeoni]

Implemented in dev-0.3 and #201 at least automated serialization of ImpiantiDiRisalita pipeline test