Lots of smaller fixes:

- Add the rotation_duration to the keys API
- Have the key service UI use the new rotation_duration field
- Fix notification deletion lookup path
- Add proper support for the new notification in the UI
- Only delete expired keys after 7 days (configurable)
- Fix angular digest loop
- Fix unit tests
- Regenerate initdb

config.py

@@ -304,3 +304,7 @@ class DefaultConfig(object):
 
   # The timeout for service key approval.
   UNAPPROVED_SERVICE_KEY_TTL_SEC = 60 * 60 * 24 # One day
+
+  # How long to wait before GCing an expired service key.
+  EXPIRED_SERVICE_KEY_TTL_SEC = 60 * 60 * 24 * 7 # One week
+