message: add data-bid to xmpp uris
diff: @@ -1300,6 +1300,9 @@ jsxc.gui = {
  var jid = href.split('?')[0];
  var action, params = {};
  + element.attr('data-bid', jsxc.jidToBid(jid));
  + jsxc.gui.update(jsxc.jidToBid(jid));
  +
  if (href.indexOf('?') < 0) {
  action = 'message';
  } else {
  