new_contents: # -*- coding: utf-8 -*-
  # Generated by Django 1.11.6 on 2018-12-16 12:23
  from __future__ import unicode_literals
  
  import django.core.validators
  from django.db import migrations, models
  import re
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('server', '0028_auto_20181211_1333'),
      ]
  
      operations = [
          migrations.AlterField(
              model_name='profile',
              name='member_id',
              field=models.CharField(help_text='Format:sss-oo-mmmmmm s=Sektionsnummer(008) o=Ortsgruppe(00|01) m=Mitgliedsnummer', max_length=13, null=True, unique=True, blank=True, validators=[django.core.validators.RegexValidator(re.compile('\\d{3}-\\d{2}-\\d{6}', 32), 'Bitte auf den richtigen Aufbau achten')], verbose_name='MitgliedsNr'),
          ),
      ]
  
subject: Improve member_id field (We need the possibility of meber_id = NULL)