Update Gluon Generator and CNNTrain and minor test changes
ATTENTION: Requires the merge request CNNArch2Gluon!22 (merged) and monticore/EmbeddedMontiArc/languages/CNNTrainLang!22 (merged)
- Increase the version to 0.3.7-SNAPSHOT
- Integrate new version of CNNTrain and CNNArch2Gluon
- Fix tests with license header problems
- Disable the python wrapper library build test on Windows systems
- Add a test case that checks the fix in CNNTrain