Some improvements to the config (breaking changes!)

- Remove support for per-page/section emoji favicon (breaking change!)
- Update copyright year
- Improve code comments in config
- Introduce a new configuration variable: locale; used for defining comment timestamp locale
- Fix code blocks having every other line being darker in some complex cases (unset leftover styles from "table")
- Fix code block "mark" having an edge highlight (leftover style from "mark")
- Use get_url for code block styles
- Always use png favicon as a fallback
- Get rid of transparency and roundness in apple-touch-icon (as recommended by 🤮pple)

templates/partials/comments.html

@@ -185,7 +185,7 @@
 							permalink.setAttribute("rel", "external nofollow");
 							permalink.textContent = new Date(
 								status.created_at
-							).toLocaleString("en-IE", {
+							).toLocaleString("{{ config.extra.comments.locale }}", {
 								dateStyle: "long",
 								timeStyle: "short",
 							});