Creates temporary avatar using multipart. The response is sent back as JSON stored in a textarea. This is because the
client uses remote iframing to submit avatars using multipart. So we must send them a valid HTML page back from which
the client parses the JSON.
Creates temporary avatar using multipart. The response is sent back as JSON stored in a textarea. This is because the client uses remote iframing to submit avatars using multipart. So we must send them a valid HTML page back from which the client parses the JSON.