(core) Replacing python3 specifc code

Summary: Removing JSONDecodeError type from python code that is python3 only.

Test Plan: Existing

Reviewers: paulfitz, georgegevoian

Reviewed By: paulfitz, georgegevoian

Subscribers: paulfitz

Differential Revision: https://phab.getgrist.com/D4298

sandbox/grist/dropdown_condition.py

@@ -35,7 +35,7 @@ def perform_dropdown_condition_renames(useractions, renames):
     try:
       widget_options = json.loads(col.widgetOptions)
       dc_formula = widget_options["dropdownCondition"]["text"]
-    except (json.JSONDecodeError, KeyError):
+    except (ValueError, KeyError):
       continue
 
     # Find out what table this column refers to and belongs to.

sandbox/grist/useractions.py

@@ -708,9 +708,6 @@ class UserActions(object):
       for col_rec, new_formula in sorted(six.iteritems(formula_updates)):
         col_updates.setdefault(col_rec, {}).setdefault('formula', new_formula)
 
-      acl.perform_acl_rule_renames(self, renames)
-      dropdown_condition.perform_dropdown_condition_renames(self, renames)
-
     update_pairs = col_updates.items()
 
     # Disallow most changes to summary group-by columns, except to match the underlying column.
@@ -752,6 +749,10 @@ class UserActions(object):
 
     self.doBulkUpdateFromPairs(table_id, update_pairs)
 
+    if renames:
+      acl.perform_acl_rule_renames(self, renames)
+      dropdown_condition.perform_dropdown_condition_renames(self, renames)
+
     for table_id in rebuild_summary_tables:
       table = self._engine.tables[table_id]
       self._engine._update_table_model(table, table.user_table)