downloaderLinks.user.js

// ==UserScript==
// @name         Downloader Links on Main Library Page
// @namespace    https://gist.github.com/adaliabooks/
// @version      0.2
// @description  Restores the GoG Downloader links to the main game page on the library
// @include      https://www.gog.com/account*
// @include      http://www.gog.com/account*
// @require      https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js
// @require      https://meetselva.github.io/attrchange/javascripts/attrchange.js
// @author       adaliabooks
// @updateURL    https://gist.github.com/adaliabooks/e9942593d89db2006e31/raw/
// @downloadURL  https://gist.github.com/adaliabooks/e9942593d89db2006e31/raw/
// @grant        none
// ==/UserScript==

$.fn.changeElementType = function(newType) {
    var attrs = {};

    $.each(this[0].attributes, function(idx, attr) {
        attrs[attr.nodeName] = attr.nodeValue;
    });

    var newelement = $("<" + newType + "/>", attrs).append($(this).contents());
    this.replaceWith(newelement);
    return newelement;
};

var downloadRows = $(".game-details__column--left");

$('.game-details__header').parent().attrchange({
	trackValues: true,
	callback: function (event) { 
        if(event.attributeName == "class")
        {
            if(!(event.newValue === "ng-hide")) 
            {
                var downloaderLinksURL = $("a:contains('GOG Downloader links')").attr('href');
                console.log(downloaderLinksURL);
                
                $.get(downloaderLinksURL, function( data ) {
                    var $page = $(data);
                    var downloadLinks = $page.find('.downloader__links');
                    downloadLinks.find('h2').remove();
                    /*downloadLinks.find('h2').each(function (index) {
                        $(this).changeElementType('span').css('font-size', '14px');
                    });*/
                    downloadLinks.find('a').addClass('game-link row ng-scope row__column').css({'font-size': '12px', 'padding': '0!important', 'height': '30px'});
                    downloadLinks.prepend('<h4>GoG Downloader Links</h4>');
                    console.log(downloadLinks);
                    $('.downloader__links').remove();
                    downloadRows.append(downloadLinks);
                });
            }
        }
	}        
});