Seed support for Json-Home does not support Accept header #225

According to the RFC 7231, section 5.3.2:

The "Accept" header field can be used by user agents to specify response media types that are acceptable.

However, when requesting the JSON-HOME resource and setting the Accept: application/json-home header , the server returns a 404 error because it does not process well the header.

But when using the Content-Type: application/json-home header, the server correctly returns the JSON-HOME resource with the correct content type.

In the RFC 7231, section 3.1.1.5:

The "Content-Type" header field indicates the media type of the associated representation…

Where the "representation" is the payload of the message (request or response).

So the Content-Type header should not be used in the request to specify the server about the media type to return. The Accept header should be used instead.