Ontology: add two more cardinality constraints
Merge branches 'feature/ontology-editor', 'dev/ontology-restrictions' and 'update-jquery-ui' into config-eaton-features
Ontology editor: customize to display classification space
Classification editor: add basic front-end tool infrastructure
Add method to get all classes with certain relation to certain class
Classification editor: add basic back-end
Add unicode() method to Class model
Classification graphs: add basic ontology selection display and view infrastructure
Classification graph: make urls.conf section more consistent
Add helper methods to render template blocks independently
Classification editor: return only the pure content on an AJAX request
Classification editor: dynamically create ontology model form class

If the class is not created dynamically, it would use the same query
set all over again. The query set wouldn't get updated otherwise.
Classification editor: let the front-end know which page got displayed
Classifiation editor: allow creation of new classifiacation graphs
Classification editor: add JS overrides to use Django forms in WM
Ontology: Allow reverse lookup for finding linked classes
Classification editor: display selected graph
Classification graphs: provide method to get queryset for CICI links
Classification graphs: allow to add new class instances
Classification graphs: store also link IDs in JSTree