persisted node attribute
added addNode method
fixed getAllNodes output
fixed adding a new user who has already pubkeys
fixed node-class relation; generated IDs
refactoring: removed NewUser.java
New ontology details added
refactoring: simplified authorization
using jackson instead of gson serializer for jsons now
Merge branch 'master' into dev
fixed big bug at relation between users, nodes, classes
not returning passwordhash and salt on GET calls
fixed joining the same class twice
Modified Ontology, Added Message Factory
Added fiteagle request property
Added REST status codes, Extended Message Factory
reading Motor Ontology Model and make it accessable
adding new filter for requests from SFA
added persistent tasks
Ontology changes: new class adapter, changed properties to resources