mod_bookmarks2: Add simple support for legacy PEP queries This implements the publish and items PubSub queries of XEP-0048 version 1.1, ignoring item id, publish-options, and any other query.

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

module:log("error", "mod_smacks_offline is deprecated! Just use mod_smacks!");