JavaClassStubsModelRoot does not work with IClassPathItem any more
ASMModelLoader/ClassifierLoader don't use IClasspathItems for loading
finally fix bug with non-reloadable stub models
fix memleak: new item is added each time the model is renewed by the root (no real model changes, loadedModel==repoMode)
remove not used ClassPathItemFS
make project
fix MPSSPRT-13 Cannot construct new ConceptDeclaration
was an error in ConceptsScope; this class was removed/replaced with ModelAndImportedScope