mod_delegation: use clean_xmlns to remove jabber:client namespace from node: for the same reason as in mod_privilege, `jabber:client` namespace is removed with the clean_xmlns method coming from there. Furthermore, the forwarded <iq> stanza use the `jabber:client` xmlns while the stanza may come from a component with e.g. `jabber:component:accept` xmlns, this can lead to inconsistencies between the <iq> stanza and children (like <error> element).

$(function() {
	let jsxc = new JSXC({
		loadConnectionOptions: function(username, password) {
			return Promise.resolve(%s);
		}
	});

	let formElement = $('#jsxc_login_form');
	let usernameElement = $('#jsxc_username');
	let passwordElement = $('#jsxc_password');

	jsxc.watchForm(formElement, usernameElement, passwordElement);
});