feat: add support bundle notice to viewer

web/templates/view.html

@@ -11,9 +11,21 @@
     <div>
       <h1>{{ .Title }}</h1>
     </div>
+    {{ if .DownloadArchiveURL }}
+    <div class="header-actions">
+      <a class="header-action" href="{{ .DownloadArchiveURL }}">{{ if .DownloadArchiveLabel }}{{ .DownloadArchiveLabel }}{{ else }}Download archive{{ end }}</a>
+    </div>
+    {{ end }}
   </header>
 
   <main class="page-main">
+    {{ if .NoticeTitle }}
+    <section class="notice-panel">
+      <h2>{{ .NoticeTitle }}</h2>
+      <p>{{ .NoticeBody }}</p>
+    </section>
+    {{ end }}
+
     {{ if .HasSnapshot }}
     <section class="meta-panel">
       <h2>Snapshot Metadata</h2>