use more speaking names for variables
obey hound
adding groups without children or parent to nodes
move symbol api handling to api namespace.
add json serialization for a symbol.
set respond_to for basic model-resources This includes Logics, Repositories, Ontologies, Sentences, Symbols and Mappings.
Obey hound.
Rename EntityGroup where it was missed.
Adjust class name.
Run rename refactor script.