mod_websocket: Make sending a self-closing <stream:stream> tag configurable Due to limitations in browser's XML parsers most (all?) existing client implementations require the <stream:stream/> tag to be self-closing. This commit makes this behaviour configurable, to enable "proper" implementations.

module:hook("authentication-failure", function (event)
	module:log("info", "Failed authentication attempt (%s) from IP: %s", event.condition, event.session.ip);
end);