backoffice/listing: show all "in_listing" fields by default (fix #1780)

wcs/backoffice/root.ptl

@@ -252,11 +252,11 @@ class FormPage(Directory):
     def get_fields_from_query(self):
         field_ids = [x for x in get_request().form.keys()]
         if not field_ids:
+            field_ids = ['id', 'time', 'user-label']
             for field in self.formdef.fields:
-                if not hasattr(field, str('get_view_value')):
-                    continue
-                field_ids = ['id', 'time', 'user-label', field.id, 'status']
-                break
+                if hasattr(field, str('get_view_value')) and field.in_listing:
+                    field_ids.append(field.id)
+           field_ids.append('status')
 
         fields = []
         for field in self.get_formdef_fields():