v0.26.2 http sink backlog for late streams, web updates

internal/sink/http/web/login.html

@@ -5,6 +5,7 @@
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>LogWisp sign-in</title>
 <link rel="stylesheet" href="style.css">
+<link rel="icon" href="favicon.svg" type="image/svg+xml">
 <script type="module" src="login.js"></script>
 </head>
 <body>