project can be public (default) or private

issue/migrations/0005_project_public.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('issue', '0004_milestone_closed'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='project',
+            name='public',
+            field=models.BooleanField(default=True, verbose_name='Do unregistered users have read access to this project?'),
+            preserve_default=True,
+        ),
+    ]