Merge rnn into develop

pom.xml

...e/lang/monticar/cnnarch/gluongenerator/CNNArch2Gluon.java

...uongenerator/CNNArch2GluonArchitectureSupportChecker.java

...arch/gluongenerator/CNNArch2GluonLayerSupportChecker.java

...narch/gluongenerator/CNNArch2GluonTemplateController.java

.../lang/monticar/cnnarch/gluongenerator/CNNTrain2Gluon.java

...enerator/reinforcement/critic/CriticNetworkGenerator.java

src/main/resources/templates/gluon/CNNCreator.ftl

src/main/resources/templates/gluon/CNNDataLoader.ftl

src/main/resources/templates/gluon/CNNNet.ftl

src/main/resources/templates/gluon/CNNPredictor.ftl

src/main/resources/templates/gluon/CNNSupervisedTrainer.ftl

src/main/resources/templates/gluon/CNNTrainer.ftl

src/main/resources/templates/gluon/elements/Input.ftl

src/main/resources/templates/gluon/elements/OneHot.ftl

src/main/resources/templates/gluon/elements/Output.ftl

.../lang/monticar/cnnarch/gluongenerator/GenerationTest.java

.../cnnarch/gluongenerator/IntegrationPythonWrapperTest.java

src/test/resources/architectures/Alexnet.cnna

src/test/resources/architectures/ResNeXt50.cnna