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.

-- this module is deprecated, log an error and load the superseding modules instead
module:depends"smacks"
module:depends"nooffline_noerror"

module:log("error", "mod_smacks_noerror is deprecated! Just use mod_smacks and load mod_nooffline_noerror if you explicitly disabled offline storage (mod_offline)");