otrs.unict.user.js

// ==UserScript==
// @name        OTRS
// @namespace   otrsunict
// @include     https://otrs.unict.it/otrs/index.pl*
// @version     1.2
// @grant       none
// ==/UserScript==

// Anonymous "self-invoking" function
(function() {
    // Load the script
    //var script = document.createElement("SCRIPT");
    //script.src = 'https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.2/jquery.min.js';
    //script.type = 'text/javascript';
    //document.getElementsByTagName("head")[0].appendChild(script);

    // Poll for jQuery to come into existance
    var checkReady = function(callback) {
        if (window.jQuery) {
            callback(jQuery);
        }
        else {
            window.setTimeout(function() { checkReady(callback); }, 100);
        }
    };

    // Start polling...

    checkReady(function($) {
      $.ajax({
        url:"https://gist.githubusercontent.com/fazen/642114215ff441ee508b9278c6b5a69e/raw/e71fc1dad697b3dcaad620ccef7b80f95dc85923/otrs-unict.css",
        success:function(data){
          $("<style></style>").appendTo("head").html(data);
        }
      });
    });
})();