endpoints for annotations related to the brain

[selBaez]

Implemented three endpoints related to 'the brain'. These retrieve a list according to the ontology or the episodic memory. The endpoints get: annotation types (classes and relations) and annotation values (instances).

I used the API routes: api/annotation/class_types, api/annotation/relation_types, /api/annotation/<class_type>/instances. These API routes are open to change.

All the new code supporting these endpoints is in gmrc.annotation.brain.util. The code is mostly taken from the brain package, but I did not want to create a dependency. I also managed to load and query triples without dependency to GraphDB.

Also, the folder structure can be discussed. Maybe the brain sub-folders could/should be scenario specific?

You may test the endpoints with this data:
test_data.zip

Improvements:

• Load ontology and memory just once. Probably integrate with ScenarioStorage ?
• Discuss brain folder structure
• Discuss relation endpoint (maybe it takes entity types as optional arguments?)

[numblr]

Looks nice :) I added two two small comments..