forces textarea font to monospace in jenkins

jenkins-monospace-tampermonkey.js

// ==UserScript==
// @name         Jenkins monospace
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @include      https://ci-master.ontrq.com/*
// @include      https://ci-master-01.ecofabric.com/*
// @grant        GM_addStyle
// ==/UserScript==

(function() {
    'use strict';

    // Your code here...
    var css = "textarea {font-family:Consolas,Monaco,Lucida Console,Liberation Mono,DejaVu Sans Mono,Bitstream Vera Sans Mono,Courier New, monospace !important;}";

    if (typeof GM_addStyle != "undefined") {
        GM_addStyle(css);
    } else if (typeof addStyle != "undefined") {
        addStyle(css);
    } else {
        var heads = document.getElementsByTagName("head");
        if (heads.length > 0) {
            var node = document.createElement("style");
            node.type = "text/css";
            node.appendChild(document.createTextNode(css));
            heads[0].appendChild(node);
        }
    }
})();