+ admin::populate_video_list now populates t he video list

The ul here is meant to serve as a quick
way to check what videos are being served
as well as removing videos

+ category::VideoMeta::as_li built for admin video list
This is basically how we spit this out onto
the DOM

api/src/category.rs

@@ -56,6 +56,8 @@ pub fn get_category_thumbnail(category: &str) -> std::io::Result<String> {
     })
 }
 
+/// Returns a List of categories
+/// Primarily used on the main page
 /// WARN: misconfigured servers are just going to get shafted and serve up
 /// a tonne of 500's
 #[get("/categories")]