useful.js

var jq = document.createElement('script');
jq.src = "https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js";
document.getElementsByTagName('head')[0].appendChild(jq);
// ... give time for script to load, then type (or see below for non wait option)
jQuery.noConflict();

setInterval(() => $(".icon-oj:not([src='/images/repliers/crownIcon.png'])").each(function() {$(this).parents("li").remove()}), 100);

i = setInterval(() => {return window.scrollTo(0,document.body.scrollHeight);}
, 1000);

var killId = setTimeout(function() {
  for (var i = killId; i > 0; i--) clearInterval(i)
}, 100);