fixed a bug in FK field URLs
fixed units issue for test data generator
section odml_type changed from int to sting. section stats were refactored and improved
metadata for NEO fixed
added shortcuts for data by metadata filter
bug in metadata propagation fixed
refactoring in core handler started
Merge branch 'api-stable' into handler_refactoring
added non-unique key filtering
merged non-unique key filtering
refactoring core handlers and security for children done
added acls to the main GET response + some refactoring moving fill_ methods in ObjectExtender class
update for guid/starts_at = Etag/last-modified for parent objects after any children relations change done
bulk acl update method done
metadata tagging cascade propagation for NEO objects improved
REST tests refactoring in progress
metadata filters parsing re-implemented
bugfixes in save_changes
metadata filters processing extended
more tests added to the REST basic