create a simpler header for non-main pages

mgs/mgs.html

@@ -9,6 +9,9 @@
 	</head>
 
 	<body>
+		<header>
+			<p id="headermain"><a id="homelink" href="/">dairydemon.net</a></p>
+		</header>
 		<main>
 			<nav>
 				<h2>Contents</h2>