mod_http_muc_log: Ignore fallback body next to XEP-0444: Message Reactions Some clients send a quote reply along with XEP-0444 in order to accommodate legacy clients. This however takes up some space and the reaction is shown twice. This is a matter of some debate with diverging opinions about whether this should be done at all and how to handle this.

This module was meant to help convert the deprecated [XEP-0156] TXT records into JSON format.

```shell
$ prosodyctl mod_auto156 example.com [another.example ...]
{"links":[{"href":"https://xmpp.example.com/bosh","rel":"urn:xmpp:alt-connections:xbosh"}]}
...
```