[Identities and Links]: changes links to context URLs in match with the latest ones from Ontology viewer

[Nazarah]

Since we now have the latest ontologies in the ontology viewer, context URLs used in cURL requests for identity API should be changed.

• [x] Replace old context link URLs in the cURL requests
• [x] test to see if the cURL requests are functioning as they should be

closes #47

[Nazarah]

fixed.