Note: After saving, you have to bypass your browser's cache to see the changes. Internet Explorer: press Ctrl-F5, Mozilla: hold down Shift while clicking Reload (or press Ctrl-Shift-R), Opera/Konqueror: press F5, Safari: hold down Shift + Alt while clicking Reload, Chrome: hold down Shift while clicking Reload.
// Cat-A-Lot preferences
window.catALotPrefs = {"watchlist":"preferences","minor":true,"editpages":true,"docleanup":false,"subcatcount":50};

// SVGedit ([[User:Rillke/SVGedit.js]])
importScript('User:Rillke/SVGedit.js');

// Show images in upload log
$('.mw-changeslist-log-upload td[data-target-page]').each(function(){
  var imglink = 'https://commons.wikimedia.org/wiki/Special:FilePath/'+this.getAttribute('data-target-page').replace(/ /g,'_');
  $(this).prepend($('<a></a>',{href:imglink,html:$('<img/>',{src:imglink}).css({'max-width':40,'max-height':30})}));
});