Improve Social Media Previews

[ryanvilbrandt]

Currently, social media preview information will be the same for every page. It would be better to have the preview info match the current page (title, link), and for comic pages possibly providing a thumbnail image instead of a preview image, if it exists.

Doing this would require setting the preview_image, height, and width values as well as the page URL in the Python script before passing them to the template.