remove comments, add fediverse:creator metadata

comments has never been used by others, I'd prefer to not have to moderate everyone's comment. My blog is really a static blog with no complex javascript tool.

The fediverse:creator metadata is parsed by Mastodon preview URL system to credit the author of the article and link to its Fediverse account.

src/css/screen.css

@@ -418,7 +418,7 @@ button .icon,
 }
 
 dialog > header button {
-	aspect-ratio: 1;
+	aspect-ratio: 1 / 1;
 	padding: 0.2rem;
 	font-size: 1rem;
 	font-weight: 900;