Add ability for super users to take ownership of namespaces

Fixes #1395

data/migrations/versions/0f17d94d11eb_add_take_ownership_log_entry_kind.py

@@ -0,0 +1,26 @@
+"""Add take_ownership log entry kind
+
+Revision ID: 0f17d94d11eb
+Revises: a3ba52d02dec
+Create Date: 2016-06-07 17:22:20.438873
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '0f17d94d11eb'
+down_revision = 'a3ba52d02dec'
+
+from alembic import op
+
+def upgrade(tables):
+    op.bulk_insert(tables.logentrykind,
+    [
+        {'name':'take_ownership'},
+    ])
+
+
+def downgrade(tables):
+    op.execute(
+        (tables.logentrykind.delete()
+            .where(tables.logentrykind.c.name == op.inline_literal('take_ownership')))
+    )