Add proper natural sort to swarming UI

appengine/swarming/ui/res/imp/botlist/bot-list-demo.html

Index: appengine/swarming/ui/res/imp/botlist/bot-list-demo.html
diff --git a/appengine/swarming/ui/res/imp/botlist/bot-list-demo.html b/appengine/swarming/ui/res/imp/botlist/bot-list-demo.html
index e5bdb21a9275261e4dd3b890c7f612b1c452f54d..4cbe1e1cce75beda2d961cfdf304faaa69358c5e 100644
--- a/appengine/swarming/ui/res/imp/botlist/bot-list-demo.html
+++ b/appengine/swarming/ui/res/imp/botlist/bot-list-demo.html
@@ -13,6 +13,7 @@
   <meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1, user-scalable=yes">
   <script src="../bower_components/webcomponentsjs/webcomponents-lite.js"></script>
   <script src="../../../node_modules/skia-common-js/common.js"></script>
+  <script src="../../../build/js/natural-sort.js"></script>
   <script src="/res/js/common.js"></script>
   <script src="/res/js/alias.js"></script>
   <script src="../../../node_modules/sinon/pkg/sinon-1.17.5.js"></script>