forms: store formdata before tracking code (#6597)

wcs/forms/root.py

@@ -766,9 +766,9 @@ class FormPage(Directory):
             if [x for x in user_forms if not x.is_draft()]:
                 return redirect('%s/' % user_forms[0].id)
 
+        filled.store()
         self.keep_tracking_code(filled)
         session.remove_magictoken(get_request().form.get('magictoken'))
-        filled.store()
 
         if not filled.user_id and existing_formdata is None:
             a = AnonymityLink()

wcs/tracking_code.py

@@ -63,7 +63,6 @@ class TrackingCode(StorableObject):
     def formdata(self, value):
         self.formdef = value.formdef
         self.formdata_id = str(value.id)
-        if not self.id:
-            self.store()
+        self.store()
         value.tracking_code = self.id
         value.store()