Test assigment of relation classes (work in progress)
Renamed and fixed relation class between blog comments and content nodes
Minor changes
Implemented a recursive lookup for the best-matching relation class
Moved to BlogCommentContents
Merge branch 'feature/external_schema' of github.com:structr/structr into feature/external_schema
Don't start with suspend=y in debug mode
Use AbstractNode instead of NodeInterface
Modifications due to migration uuid -> id
Merge branch 'feature/external_schema' of github.com:structr/structr into feature/external_schema