Move header to separate header.html

gpg-fingerprints/index.html

@@ -22,9 +22,7 @@
 </head>
 
 <body>
-    <div class="header">
-        <h1>bbaovanc's Website</h1>
-    </div>
+    <!--#include file="/header.html" -->
     <div class="navbar">
         <a href="/">Home</a>
     </div>