Update theme to Fork CMS 3.7.x

I capitalized/CamelCased the folder names and some files to be compatible with Fork CMS 3.7.x just like the Triton theme. I also changed each `core/layout/templates` path in the templates to the capitalized version, etc...

I also removed the Fancybox css import line of code in `screen.css` because it was throwing an error in the browser console (the file doesn't exist), and fancybox isn't used in the theme (no js to be found).

Also, what's the point of those `recent_articles_list--.tpl` files? The `--` is to not enable them, and enable them afterwards?