Fix 'file' and 'files' schemas' XML in 'XML export' rendition

<?xml version="1.0" encoding="UTF-8"?>

<document repository="default" id="3b4a8e5a-4d77-406b-8048-31e91a98ac14">
  <system>
    <type>File</type>
    <path>default-domain/workspaces/ws1/SUPNXP-23157 1</path>
    <lifecycle-state>project</lifecycle-state>
    <lifecycle-policy>default</lifecycle-policy>
    <facet>Versionable</facet>
    <facet>NXTag</facet>
    <facet>Publishable</facet>
    <facet>Commentable</facet>
    <facet>HasRelatedText</facet>
    <facet>Thumbnail</facet>
    <access-control>
      <acl name="inherited">
        <entry principal="Administrator" permission="Everything" grant="true"/>
        <entry principal="members" permission="Read" grant="true"/>
      </acl>
    </access-control>
  </system>
  <schema xmlns:file_schema="http://www.nuxeo.org/ecm/project/schemas/vdutat-sandbox-92-nuxeo/file_schema" name="file_schema"></schema>
  <schema xmlns:uid="http://project.nuxeo.com/geide/schemas/uid/" name="uid">
    <uid:major_version><![CDATA[0]]></uid:major_version>
    <uid:minor_version><![CDATA[0]]></uid:minor_version>
  </schema>
  <schema xmlns:thumb="http://www.nuxeo.org/ecm/schemas/thumbnail" name="thumbnail">
    <thumb:thumbnail>
      <encoding></encoding>
      <mime-type>image/png</mime-type>
      <filename>blank.png</filename>
      <data>b6787ece.blob</data>
      <digest>955a0ea66b997b61f007a93fa5586a06</digest>
    </thumb:thumbnail>
  </schema>
  <schema xmlns:file="http://www.nuxeo.org/ecm/schemas/file/" name="file">
    <file:content>
      <encoding></encoding>
      <mime-type>application/pdf</mime-type>
      <filename>blank.pdf</filename>
      <data>b9b88f4b.blob</data>
      <digest>84e96476a8250179222453750a2df8ad</digest>
    </file:content>
  </schema>
  <schema xmlns:common="http://www.nuxeo.org/ecm/schemas/common/" name="common">
    <common:icon><![CDATA[/icons/pdf.png]]></common:icon>
  </schema>
  <schema xmlns:files="http://www.nuxeo.org/ecm/schemas/files/" name="files">
    <files:files/>
  </schema>
  <schema xmlns:dc="http://www.nuxeo.org/ecm/schemas/dublincore/" name="dublincore">
    <dc:creator><![CDATA[Administrator]]></dc:creator>
    <dc:modified><![CDATA[2018-05-31T19:04:16.000Z]]></dc:modified>
    <dc:lastContributor><![CDATA[Administrator]]></dc:lastContributor>
    <dc:created><![CDATA[2018-05-31T19:04:16.000Z]]></dc:created>
    <dc:title><![CDATA[SUPNXP-23157 1]]></dc:title>
    <dc:contributors>
      <item><![CDATA[Administrator]]></item>
    </dc:contributors>
  </schema>
  <schema xmlns:relatedtext="http://www.nuxeo.org/ecm/schemas/relatedtext/" name="relatedtext">
    <relatedtext:relatedtextresources/>
  </schema>
  <schema xmlns:nxtag="http://www.nuxeo.org/ecm/schemas/facetedTag/" name="facetedTag">
    <nxtag:tags/>
  </schema>
</document>

{
  "entity-type": "document",
  "repository": "default",
  "uid": "3b4a8e5a-4d77-406b-8048-31e91a98ac14",
  "path": "/default-domain/workspaces/ws1/SUPNXP-23157 1",
  "type": "File",
  "state": "project",
  "parentRef": "aa99a19c-97c3-425b-b87b-a3cec2c31a90",
  "isCheckedOut": true,
  "isVersion": false,
  "isProxy": false,
  "changeToken": "4-0",
  "title": "SUPNXP-23157 1",
  "lastModified": "2018-05-31T19:04:16.000Z",
  "properties": {
    "uid:uid": null,
    "uid:major_version": 0,
    "uid:minor_version": 0,
    "thumb:thumbnail": {
      "name": "blank.png",
      "mime-type": "image/png",
      "encoding": null,
      "digestAlgorithm": "MD5",
      "digest": "955a0ea66b997b61f007a93fa5586a06",
      "length": "1019",
      "data": "http://localhost:8080/nuxeo/nxfile/default/3b4a8e5a-4d77-406b-8048-31e91a98ac14/thumb:thumbnail/blank.png"
    },
    "file:content": {
      "name": "blank.pdf",
      "mime-type": "application/pdf",
      "encoding": null,
      "digestAlgorithm": "MD5",
      "digest": "84e96476a8250179222453750a2df8ad",
      "length": "6611",
      "data": "http://localhost:8080/nuxeo/nxfile/default/3b4a8e5a-4d77-406b-8048-31e91a98ac14/file:content/blank.pdf"
    },
    "common:icon-expanded": null,
    "common:icon": "/icons/pdf.png",
    "files:files": [],
    "dc:description": null,
    "dc:language": null,
    "dc:coverage": null,
    "dc:valid": null,
    "dc:creator": "Administrator",
    "dc:modified": "2018-05-31T19:04:16.000Z",
    "dc:lastContributor": "Administrator",
    "dc:rights": null,
    "dc:expired": null,
    "dc:format": null,
    "dc:created": "2018-05-31T19:04:16.000Z",
    "dc:title": "SUPNXP-23157 1",
    "dc:issued": null,
    "dc:nature": null,
    "dc:subjects": [],
    "dc:contributors": [
      "Administrator"
    ],
    "dc:source": null,
    "dc:publisher": null,
    "relatedtext:relatedtextresources": [],
    "nxtag:tags": []
  },
  "facets": [
    "Versionable",
    "NXTag",
    "Publishable",
    "Commentable",
    "HasRelatedText",
    "Thumbnail"
  ],
  "contextParameters": {
    "acls": [
      {
        "name": "inherited",
        "aces": [
          {
            "id": "Administrator:Everything:true:::",
            "username": "Administrator",
            "externalUser": false,
            "permission": "Everything",
            "granted": true,
            "creator": null,
            "begin": null,
            "end": null,
            "status": "effective"
          },
          {
            "id": "members:Read:true:::",
            "username": "members",
            "externalUser": false,
            "permission": "Read",
            "granted": true,
            "creator": null,
            "begin": null,
            "end": null,
            "status": "effective"
          }
        ]
      }
    ],
    "permissions": [
      "Read",
      "Write",
      "ReadChildren",
      "AddChildren",
      "Everything",
      "RemoveChildren",
      "ReadWrite"
    ]
  }
}