Made getOwnModelDescriptors final in AbstractModule
Add two migrations for IModule to ApiTransformations
Migrate IModule#getModuleFqName -> SModule#getModuleName
Migrate IModule#getOwnModelDescriptors -> SModule#getModels
getModuleFqName -> getModuleName in java code
getOwnModelDescriptors -> getModels in java code
Fix some diff tests
Fix some diff tests
Merge branch 'ttim/imodule_refactoring'

Conflicts:
	plugins/mps-build/pluginSolutions/jetbrains.mps.build.mps.pluginSolution/source_gen/jetbrains/mps/build/mps/pluginSolution/plugin/BuildGeneratorUtil.java