Reconciliation API does not accept POST requests

[hauschke]

Describe the bug
The reconciliation testbench gives an error when trying with a VIVO reconciliation endpoint.

To Reproduce

1. Go to ['...'](https://reconciliation-api.github.io/testbench/#/client/https%3A%2F%2Fvivo.tib.eu%2Ffis%2Freconcile.
2. Search for something, e.g. "linked data" or "hauschke"
3. On the right you will see Error: t.q0 is undefined

Expected behavior
The results should show up.

Environment (please complete the following information):

• tested with VIVO version 1.14.0 and 1.15

Additional context
Feedback from @acka47:

• On 29th of July this PR was merged: Use POST closes #64 reconciliation-api/testbench#69
• $ curl -X POST "https://vivo.tib.eu/fis/reconcile" does not deliver valid JSON. There are curly brackets at the beginning and the end:
  ({"name":"VIVO Reconciliation Service","identifierSpace":"https://vivo.tib.eu/fis/individual/","schemaSpace":"https://vivo.tib.eu/fis/individual/","view":{"url":"http://vivo.tib.eu/fis/individual?uri={{id}}"},"defaultTypes":[{"id":"http://vivoweb.org/ontology/core#Role","name":"core:Role"},{"id":"http://vivoweb.org/ontology/core#AcademicDegree","name":"core:Academic Degree"},{"id":"http://purl.org/NET/c4dm/event.owl#Event","name":"event:Event"},{"id":"http://vivoweb.org/ontology/core#Agreement","name":"core:Agreement"},{"id":"http://vivoweb.org/ontology/core#Location","name":"core:Location"},{"id":"http://xmlns.com/foaf/0.1/Organization","name":"foaf:Organization"},{"id":"http://xmlns.com/foaf/0.1/Person","name":"foaf:Person"},{"id":"http://vivoweb.org/ontology/core#InformationResource","name":"core:Information Resource"}]})