Add a mode to dartdoc to generate the navigation on the client.

utils/dartdoc/client-static.dart

+// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+/** Provides client-side behavior for generated docs using the static mode. */
+#library('client-static');
+
+#import('dart:html');
+#import('../../frog/lang.dart', prefix: 'frog');
+#import('classify.dart');
+
+#source('client-shared.dart');
+
+main() {
+  window.on.contentLoaded.add((e) {
+    enableCodeBlocks();
+  });
+}