Add lock handling in Wiki

core/migrations/0015_remove_page_is_locked.py

@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0014_remove_page_revision'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='page',
+            name='is_locked',
+        ),
+    ]