mod_muc_markers: Add option for @id rewriting, default off (may break some clients) XEP-0333 was updated to clarify that stanza-id should be used instead of the 'id' attribute when in a MUC. Some clients still use the id attribute, which is why we were rewriting it. Rewriting is bad because mod_muc advertises stable_id, indicating that Prosody does *not* rewrite ids. Recent versions of Conversations actually depend on this being true. All clients should migrate to using stanza-id for markers. See XEP-0333.

Introduction
============

This module attempts to sanitize XHTML-IM messages.

It does **not** attempt to sanitize any CSS embedded in `style`
attributes, these are instead stripped by default.

Configuration
=============

  Option                   Type      Default
  ------------------------ --------- ---------
  `strip_xhtml_style`      boolean   `true`
  `bounce_invalid_xhtml`   boolean   `false`