Reapply "Add missing admin action files and navigation links"

This reverts commit 4d515bc400.

src/app/layout.tsx

@@ -35,7 +35,10 @@ export async function generateMetadata(): Promise<Metadata> {
   const hotel = (await siteSettings.get("hotel_name", "Atom")) ?? "Atom";
   const customFavicon = await siteSettings.get("cms_favicon");
   const faviconUrl = customFavicon ?? "/favicon.svg";
-  const icons = [{ rel: "icon", url: faviconUrl }, { rel: "shortcut icon", url: faviconUrl }];
+  const icons = [
+    { rel: "icon", url: faviconUrl },
+    { rel: "shortcut icon", url: faviconUrl },
+  ];
   return {
     title: { default: `${hotel} - Hotel`, template: `%s · ${hotel}` },
     description: `${hotel} — a Habbo retro hotel. Hang out, collect furni and meet friends.`,
@@ -103,4 +106,3 @@ export default async function RootLayout({ children }: { children: ReactNode })
     </html>
   );
 }
-