Improve 404 message

layouts/404.html

@@ -2,10 +2,17 @@
 {{ define "main" }}
   <div role="main" class="container main-content">
     <div class="text-center">
-      <h1>{{ i18n "pageNotFound" }}</h1>
-      <br/>
-      <img src="{{ "img/404-southpark.jpg" | absURL }}" />
+      <h1 class="error-emoji"></h1>
+      <p class="error-text">{{ i18n "pageNotFound" }}</p>
     </div>
   </div>
+<script>
+  var errorEmojiContainer = document.getElementsByClassName('error-emoji')[0];
+  var emojiArray = [
+    '\\(o_o)/', '(o^^)o', '(˚Δ˚)b', '(^-^*)', '(≥o≤)', '(^_^)b', '(·_·)',
+    '(=\'X\'=)', '(>_<)', '(;-;)', '\\(^Д^)/',
+  ];
+  var errorEmoji = emojiArray[Math.floor(Math.random() * emojiArray.length)];
+  errorEmojiContainer.appendChild(document.createTextNode(errorEmoji));
+</script>
 {{ end }}
-