mod_rest: Add XEP-0066 to mapping schema (breaking from previous jsonmap) before: oob_url: http://example.com/ after: oob: url: http://example.com/ desc: optional description Deals with the fact that the name and namespace differs based on whether it's in an iq or message stanza, unlike oob_url

This module lets you block connections to any remote servers not on a
whitelist.

``` {.lua}
s2s_whitelist = {
    "example.org",
}
```