mod_rest: Support parameters in callback URL
E.g.
rest_callback_url = "http://myapi.example:5000/api/{kind}/{type}"
which results in e.g. requests to /api/message/chat
Allows using path routing in web frameworks for dispatch instead of
having to pick apart the payload to further dispatch it.
---
labels:
summary: Send restricted XML for conformance testing
...
Introduction
============
This module sends processing instructions, comments, DTDs and a non
predefined entity (defined by the DTD) to the requesting entity.
Usage
=====
Send "PI", "comment", "DTD" or "entity" to
<xmpp:example.com/conformance>, while directly connected to the Prosody
instance.