erp5_json_form: order JSON Schema keys and do not enforce $id

bt5/erp5_json_form/ModuleComponentTemplateItem/portal_components/document.erp5.JSONForm.py

@@ -27,6 +27,9 @@
 ##############################################################################
 import json
 import jsonschema
+
+from collections import OrderedDict
+
 from erp5.component.document.JSONType import JSONType
 from erp5.component.document.TextDocument import TextDocument
 
@@ -90,8 +93,10 @@ class JSONForm(JSONType, TextDocument):
     return True
 
   def returnSchema(self, schema, path, REQUEST):
-    schema = json.loads(schema)
-    schema["$id"] = self.absolute_url().strip() + path
+    schema = json.loads(schema, object_pairs_hook=OrderedDict)
+    # Replace user URL by absolute URL
+    if "$id" in schema:
+      schema["$id"] = self.absolute_url().strip() + path
 
     if REQUEST is not None:
       control = []