included tree_position in the list of backbone attributes for the Section
fixed a bug with authentication - AnonymousUser
added 10**7 arrays to the test data
short change in test data load
update in basic deserializer
main array objects of NEO changed to support arrays in files
GNODE NEO models aligned with the current NEO design
moved acl update method from REST to the SafetyLevel class
added ACL update propagation to the array-type datafiles, linked to NEO data objects
owner permalink changed from profile URL to the user URL
merged download url to data url in datafiles. export ti the JSON format improved
made all blank fields nullable
Merge branch 'api-stable' of ssh://gate.g-node.org/groups/g-node-core/git/portal into api-stable
Merge branch 'api-stable' into wdat2-develop