Support custom Resource load options

[JanWittler]

There are some domains where we want to ignore certain information of the model / the model serialization. As an example for Java (JaMoPP), we do not care about any layout information of the source file. However, by saving such a model to file and reloading it, the reloaded model is populated with the unwanted information and thus our change recorder and change propagation mechanism have problems resolving the newly added elements.
Hence, we should support domain-specific load / recording options. This should be at least necessary for the ChangePublishingTestView but might be relevant in other parts, too.

As a consequence of this incorrect behavior, some tests are currently deactivated, see vitruv-tools/Vitruv-CaseStudies#253.