old_contents: # -*- coding: utf-8 -*-
  # Generated by Django 1.9.7 on 2016-07-25 14:16
  from __future__ import unicode_literals
  
  from django.conf import settings
  from django.db import migrations, models
  import django.db.models.deletion
  import django_countries.fields
  
  
  class Migration(migrations.Migration):
  
      initial = True
  
      dependencies = [
          migrations.swappable_dependency(settings.AUTH_USER_MODEL),
      ]
  
      operations = [
          migrations.CreateModel(
              name='Conference',
              fields=[
                  ('id', models.SlugField(
                      max_length=10, primary_key=True, serialize=False)),
                  ('created', models.DateTimeField(auto_now_add=True)),
                  ('modified', models.DateTimeField(auto_now=True)),
                  ('title', models.CharField(max_length=100)),
                  ('site', models.URLField(blank=True)),
                  ('city', models.CharField(default='', max_length=100)),
                  ('state', models.CharField(default='', max_length=100)),
                  ('country', django_countries.fields.CountryField(
                      max_length=2)),
                  ('event_start', models.DateTimeField(blank=True, null=True)),
                  ('event_end', models.DateTimeField(blank=True, null=True)),
                  ('submission_start', models.DateTimeField(
                      blank=True, null=True)),
                  ('submission_end', models.DateTimeField(
                      blank=True, null=True)),
                  ('logo', models.URLField(blank=True)),
                  ('description', models.TextField(blank=True, max_length=500)),
                  ('admin', models.ForeignKey(blank=True, null=True,
                                              on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
              ],
              options={
                  'ordering': ('created',),
                  'permissions': (('view_conference', 'Can view conference'),),
              },
          ),
      ]
  
new_contents: # -*- coding: utf-8 -*-
  # Generated by Django 1.9.7 on 2016-07-25 14:16
  from __future__ import unicode_literals
  
  from django.conf import settings
  from django.db import migrations, models
  import django.db.models.deletion
  import django_countries.fields
  
  
  class Migration(migrations.Migration):
  
      initial = True
  
      dependencies = [
          migrations.swappable_dependency(settings.AUTH_USER_MODEL),
      ]
  
      operations = [
          migrations.CreateModel(
              name='Conference',
              fields=[
                  ('id', models.SlugField(max_length=10, primary_key=True, serialize=False)),
                  ('created', models.DateTimeField(auto_now_add=True)),
                  ('modified', models.DateTimeField(auto_now=True)),
                  ('title', models.CharField(max_length=100)),
                  ('site', models.URLField(blank=True)),
                  ('city', models.CharField(default='', max_length=100)),
                  ('state', models.CharField(default='', max_length=100)),
                  ('country', django_countries.fields.CountryField(max_length=2)),
                  ('event_start', models.DateTimeField(blank=True, null=True)),
                  ('event_end', models.DateTimeField(blank=True, null=True)),
                  ('submission_start', models.DateTimeField(blank=True, null=True)),
                  ('submission_end', models.DateTimeField(blank=True, null=True)),
                  ('logo', models.URLField(blank=True)),
                  ('description', models.TextField(blank=True, max_length=500)),
                  ('admin', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
              ],
              options={
                  'ordering': ('created',),
                  'permissions': (('view_conference', 'Can view conference'),),
              },
          ),
      ]
  
subject: Undo changes to migration