new_contents: # -*- coding: utf-8 -*-
  # Generated by Django 1.9.2 on 2016-04-04 09:32
  from __future__ import unicode_literals
  
  from django.db import migrations
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('users', '0017_auto_20160208_1751'),
      ]
  
      operations = [
          migrations.RunSQL(
              "UPDATE users_role SET permissions = ARRAY_REMOVE(permissions, 'vote_issues')"
          ),
      ]
  
subject: Clean user role permissions: remove vote_issues in Role.permissions