Create anonymous user profile in migration

Doing that in post_migrate signal causes problem with longer migrations
as it's dependencies can not be fulfilled.

Issue #1082
Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/accounts/migrations/0017_anonymous_profile.py

+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.5 on 2016-04-20 16:05
+from __future__ import unicode_literals
+
+from django.db import migrations
+
+from weblate.appsettings import ANONYMOUS_USER_NAME
+
+
+def add_anonymous_profile(apps, schema_editor):
+    """Ensure anonymous user has profile"""
+    User = apps.get_model('auth', 'User')
+    Profile = apps.get_model('accounts', 'Profile')
+    anon_user = User.objects.get_or_create(
+        username=ANONYMOUS_USER_NAME,
+        defaults={
+            'is_active': False
+        }
+    )[0]
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('accounts', '0016_add-api-keys'),
+        ('auth', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.RunPython(add_anonymous_profile),
+    ]

weblate/accounts/models.py

@@ -968,8 +968,6 @@ def create_groups(update):
             username=ANONYMOUS_USER_NAME,
             is_active=False,
         )
-    # Ensure anonymous user has profile
-    Profile.objects.get_or_create(user=anon_user)
 
     if created or update:
         anon_user.set_unusable_password()