mod_firewall: spam-blocking.pfw: Remove requirement for invites to have no body
Some clients (e.g. Gajim) send a body, which I guess makes sense.
The bare JID sender check should already make it hard to bypass this (i.e.
a normal client putting muc#user into a normal chat message shouldn't bypass
the usual message filters).
---
labels:
summary: Report server uptime in presence
...
Introduction
============
This module simply responds to a presence probe sent to the server with
a presence staza containing a timestamp from when the server started.
This is imagined as an alternative to the XEP-0012 "Last Activity"
protocol that can seem a bit overloaded.