Wallhaven Extender

Adds "Download" and "Popout" links onto all thumbnails across the site, allowing easy ways to download wallpapers or view them fullscreen in a pop-up slideshow. Slideshows contain all the wallpapers available on the page (except in the forum) and will automatically load new content as you scroll through. Also adds download links to the sidebar on the wallpaper information pages.

Slideshows can be controlled using the keyboard arrows:
  - Left/right arrows will scroll left/right in the slideshow.
  - Down arrow will download the current image
  - Up arrow will close the slideshow.
  - F will un/favourite the current image

Code and change history: https://github.com/RempRemp/Wa llhavenExtender