mod_incidents_handling: recommit after full test, cleaned it a bit as what I posted was regretfully an unfinished draft, replaced a lot of the fixed type fields used for fields description with desc elements (upstream prosody's util.dataforms will still strip those). Also moved auxiliary functions to a library.

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