anchor.diff:  }
   
   Returns the currently submitted fields and material filenames and size, this is the only interface giving back the complete submission status
  -GET /submission/<submission_id>
  +GET /submission/{submission_id}
   < 200
   < Content-Type: application/json
   {
  
positive.code: 
  Update a submission with new fields values. Returns the updated submission in a JSON array
  If finalize is set to true finalize the submission and get back the submission receipt number.
  PUT /submission/<submission_id>
  {"context_gus":"d1c364a2-65ed-4794-9664-7edb9858e0e6","wb_fields":{"Full description":"22","Short title":"11"},"finalize":true,"files":["00186c18-5909-4cd3-ba48-041dc16a4741"],"receivers":["63793685-b9a0-4ead-812d-4af62800017c"]}
  < 200
  < Content-Type: application/json
  
negative.code: {"user_id": "91a0e7c9-e704-47fb-8198-84ed707be19e", "session_id": "LqK8tfPKdKQF8LT8KlHBivVn9GuMTV0e66UyZmqm6y"}
  
  Returns the corrispondent submission to the tip_id sent parameter. Needs a X-Session value to be sent in the headers to authenticate the request.
  GET /tip/{tip_id}
  > X-Session: session_id
  < 201
  < Content-Type: application/json
  