Describe the bug

If the parallel appear before the proper title in the array of field title, this generates a bug:

• error message in the circulation interface when trying to check out/in an item linked to this document

This problem is due to the operation logs, that are not able to retrieve the field title._text

Example of document causing the problem:

"title": [
      {
        "mainTitle": [
          {
            "value": "Le voyage imaginaire"
          }
        ],
        "type": "bf:ParallelTitle"
      },
      {
        "_text": "Cirque du Soleil = Le voyage imaginaire",
        "mainTitle": [
          {
            "value": "Cirque du Soleil"
          }
        ],
        "type": "bf:Title"
      }
    ]

To Reproduce

See example above.

Expected behavior

The correction must be made on 2 levels

1. JSON schema: It is not possible to save a document with a first title of a type other than bf:Title

2. Operation logs: they should be able to retrieve title._text in any position of the array (see code below)

   @classmethod
   def _get_document_data(cls, document_pid):
       """Get document record data.
   
       :param str document_pid: Document PID
       :returns: Document formatted data
       :rtype: dict
       """
       document = Document.get_record_by_pid(document_pid)
       document = document.dumps()
       return {
           'pid': document['pid'],
           'title':
           document['title'][0]['_text'],
           'type':
           document['type'][0].get('subtype',
                                   document['type'][0]['main_type'])
       }

Context

• server: ils.test.rero.ch
• version: v1.6.1