mod_http_oauth2: Add TODO about disabling password grant Per recommendation in draft-ietf-oauth-security-topics-23 it should at the very least be disabled by default. However since this is used by the Snikket web portal some care needs to be taken not to break this, unless it's already broken by other changes to this module.

---
summary: Extra verbose stanza logging
---

Summary
=======

This module logs the full stanzas that are sent and received into debug
logs, for debugging purposes.