Add 404 and 500 pages

layouts/500.html

@@ -0,0 +1,16 @@
+{{ define "main" }}
+    <div class="centered top-fade" style="height:100vh">
+        <div class="intro-content">
+            <h1 data-value="kernel panic!" data-show="error-message" class="typewriter"></h1>
+            <div id="error-message">
+                <p data-value="Error on our side, my bad"></p>
+            </div>
+            <div class="link-block">
+                <a href="javascript:history.back()">&lt;--&nbsp;Go back</a>
+                <p>&nbsp;|&nbsp;</p>
+                <a href="{{ .Site.BaseURL }}">Home&nbsp;--&gt;</a>
+            </div>
+        </div>
+    </div>
+
+{{ end }}