Implement feedback --> see description here

Send a JSON object with information enough to recreate the request:
-- input string
-- feedback on what (type?)
-- message ({Object}) e.g. {"Which": "NN"}
-- correct/wrong e.g. {"isCorrect": "true"}
{
"input": "Which recipients of the Victoria Cross died in the Battle of Arnhem?",
"feedbackType": "Recognized Named Entities",
"message": {
"Victoria Cross": "http://dbpedia.org/resource/Victoria_Cross"
},
"isCorrect": "true"
}

The issue names no file, test, or entry point. Start by locating the feedback request handling in the JavaScript project, then use the JSON example to verify support for input, feedbackType, message, and isCorrect fields; done means a request with this shape is accepted and processed.

Written by the indexing model from the issue text.