Move default selfserve budget to ini.
POST_expando: check that a link was returned from `wrap_links`.
Handle refunds for Stripe subscriptions.
Remove obsolete IE6sux and IEsux html comments.

The reason for deleting these comments is to reduce costs by sending
less meaningless bytes to users.
Store a LastModified update on account password change.
Send password changed email regardless of verification state.
Scraper: add hook when thumb/object are applied