Add UI for viewing and changing the expiration of tags

data/migrations/versions/d8989249f8f6_add_change_tag_expiration_log_type.py

@@ -0,0 +1,25 @@
+"""Add change_tag_expiration log type
+
+Revision ID: d8989249f8f6
+Revises: dc4af11a5f90
+Create Date: 2017-06-21 21:18:25.948689
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = 'd8989249f8f6'
+down_revision = 'dc4af11a5f90'
+
+from alembic import op
+
+def upgrade(tables):
+  op.bulk_insert(tables.logentrykind, [
+    {'name': 'change_tag_expiration'},
+  ])
+
+
+def downgrade(tables):
+  op.execute(tables
+             .logentrykind
+             .delete()
+             .where(tables.logentrykind.c.name == op.inline_literal('change_tag_expiration')))