Automatically add subscription to existing owners/ACL users

Fixes #1000
Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/trans/migrations/0059_auto_20160303_0934.py

+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.2 on 2016-03-03 09:34
+from __future__ import unicode_literals
+
+from django.db import migrations
+
+
+def fill_in_subscriptions(apps, schema_editor):
+    """Adds subscriptions to owners or ACL enabled users"""
+    Project = apps.get_model('trans', 'Project')
+    Group = apps.get_model('auth', 'Group')
+
+    for project in Project.objects.all():
+        for owner in project.owners.all():
+            owner.profile.subscriptions.add(project)
+
+        if project.enable_acl:
+            group = Group.objects.get(name=project.name)
+            for user in group.user_set.all():
+                user.profile.subscriptions.add(project)
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('trans', '0058_componentlist'),
+    ]
+
+    operations = [
+        migrations.RunPython(
+            fill_in_subscriptions,
+        ),
+    ]