Self-host the icon pack instead of referencing elmah.io

Downloaded from elmah.io/*, same files, now served from this site's
own domain.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Fhp7zVUFQLn7SQKdvu8mXV

Author: ThomasArdal

_layouts/default.html

@@ -5,17 +5,16 @@
   <meta name="viewport" content="width=device-width, initial-scale=1">
   {% include meta.html %}
   {% feed_meta %}
-  <!-- Same icon pack used across elmah.io/docs.elmah.io/blog.elmah.io - referenced
-       directly from elmah.io rather than duplicating the binary files into this repo. -->
-  <link rel="icon" href="https://elmah.io/favicon.ico">
-  <link rel="apple-touch-icon" href="https://elmah.io/apple-touch-icon.png">
-  <link rel="icon" type="image/png" href="https://elmah.io/favicon-192x192.png" sizes="192x192">
-  <link rel="icon" type="image/png" href="https://elmah.io/favicon-160x160.png" sizes="160x160">
-  <link rel="icon" type="image/png" href="https://elmah.io/favicon-96x96.png" sizes="96x96">
-  <link rel="icon" type="image/png" href="https://elmah.io/favicon-16x16.png" sizes="16x16">
-  <link rel="icon" type="image/png" href="https://elmah.io/favicon-32x32.png" sizes="32x32">
+  <!-- Same icon pack used across elmah.io/docs.elmah.io/blog.elmah.io, self-hosted here. -->
+  <link rel="icon" href="/favicon.ico">
+  <link rel="apple-touch-icon" href="/apple-touch-icon.png">
+  <link rel="icon" type="image/png" href="/favicon-192x192.png" sizes="192x192">
+  <link rel="icon" type="image/png" href="/favicon-160x160.png" sizes="160x160">
+  <link rel="icon" type="image/png" href="/favicon-96x96.png" sizes="96x96">
+  <link rel="icon" type="image/png" href="/favicon-16x16.png" sizes="16x16">
+  <link rel="icon" type="image/png" href="/favicon-32x32.png" sizes="32x32">
   <meta name="msapplication-TileColor" content="#da532c">
-  <meta name="msapplication-TileImage" content="https://elmah.io/mstile-144x144.png">
+  <meta name="msapplication-TileImage" content="/mstile-144x144.png">
   <style>
     :root { color-scheme: light dark; }
     body { font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif; max-width: 720px; margin: 0 auto; padding: 2rem 1.25rem 4rem; line-height: 1.6; color: #1b1f23; background: #fff; }