Add proper natural sort to swarming UI

appengine/swarming/ui/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 = {};
 
   // return the longest string in an array
   swarming.longest = function(arr) {
       var most = "";
       for(var i = 0; i < arr.length; i++) {
         if (arr[i] && arr[i].length > most.length) {
           most = arr[i];
         }
       }
       return most;
     };
 
-  // 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 String(a).localeCompare(b);
-  };
-
-
   swarming.stableSort = function(arr, comp) {
     if (!arr || !comp) {
       console.log("missing arguments to stableSort", arr, comp);
       return;
     }
     // We can guarantee a potential non-stable sort (like V8's
     // Array.prototype.sort()) to be stable by first storing the index in the
     // original sorting and using that if the original compare was 0.
     arr.forEach(function(e, i){
       if (e !== undefined && e !== null) {
@@ skipping 37 matching lines @@
       return response;
     }).catch(function(reason) {
       console.log("Request failed", reason);
       sk.errorMessage("Request failed.  Reason: "+reason, 5000);
       return Promise.reject(reason);
     });
   }
 
   return swarming;
 }();