mod_rest: Expand mapping of XEP-0045 join stanza The previous 'join' mapping was apparently lost in translation when swithing to datamapper, so might as well map some properties allowing history control. Usually you probably want either zero history or history since the last known time of being joined. Maybe that the former should be the default?

---
summary: Answers disco#info queries on the behalf of the recipient
rockspec:
  dependencies:
    - mod_cache_c2s_caps
---

Description
===========

This module intercepts disco#info queries and checks if we already know the
capabilities of this session, in which case we don’t transmit the iq and answer
it ourselves.