CompiledConceptDescriptor: constructor
Prop/Ref/Link descriptors: getId()
fix ConceptDescriptor's methods
CompiledConceptDescriptor finished
BaseConceptDescriptor: move stub methods out
fix IllegalConceptDescriptor
ConceptDescriptorBuilder finished
ConceptDescriptorBuilder: fix obsolete code compilation just to start MPS successfully
refactor ids to match what we have in migration branch (to be able to launch after merge)
refactor ids to match what we have in migration branch (to be able to launch after merge)
MetaIdFactory for simplier generated code