Note: After saving, you have to bypass your browser's cache to see the changes. Google Chrome, Firefox, Microsoft Edge and Safari: Hold down the ⇧ Shift key and click the Reload toolbar button. For details and instructions about other browsers, see Wikipedia:Bypass your cache.
// [[User:Lupin/popupsdev.js]] - please include this line 

mw.loader.load('https://en.wikipedia.org/w/index.php?title=User:Lupin/popupsdev.js' 
             + '&action=raw&ctype=text/javascript');

popupShortcutKeys=true; // optional: enable keyboard shortcuts
popupAdminLinks=true;   // optional: enable admin links

// [[User:Zocky/PicturePopups.js]] - please include this line 

mw.loader.load('https://en.wikipedia.org/w/index.php?title=User:Zocky/PicturePopups.js' 
             + '&action=raw&ctype=text/javascript');