Extract shared filters and aliasing code

appengine/swarming/elements/res/js/common.js

 // Copyright 2016 The LUCI Authors. All rights reserved.
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
 this.swarming = this.swarming || function() {
 
   var swarming = {};
 
   swarming.stableSort = function(arr, comp) {
     if (!arr || !comp) {
@@ skipping 29 matching lines @@
   }
 
   // naturalCompare tries to use natural sorting (e.g. sort ints by value).
   swarming.naturalCompare = function(a, b) {
     // Try numeric, aka "natural" sort and use it if ns is not NaN.
     // Javascript will try to corece these to numbers or return NaN.
     var ns = a - b;
     if (!isNaN(ns)) {
       return ns;
     }
-    return a.localeCompare(b);
+    return String(a).localeCompare(b);
   };
 
   return swarming;
 }();