Add UI to new botlist to show summary

appengine/swarming/elements/res/imp/botlist/bot-list-shared.html

 <!--
   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.
 
   window.SwarmingBehaviors.BotListBehavior contains any shared functions and
   constants used by the bot-list and its sub-elements.
 
   To use it, include
       behaviors: [SwarmingBehaviors.BotListBehavior]
@@ skipping 114 matching lines @@
 
       _gpuAlias: function(gpu) {
         var a = GPU_ALIASES[gpu];
         if (!a) {
           return "UNKNOWN";
         }
         return a;
       },
 
       _not: function(a) {
-        return a;
+        return !a;
+      },
+
+      _or: function() {
+        var result = false;
+        // can't use .foreach, as arguments isn't really a function.
+        for (var i = 0; i < arguments.length; i++) {
+          result = result || arguments[i];
+        }
+        return result;
       },
 
       _taskId: function(bot) {
         if (bot && bot.task_id) {
           return bot.task_id;
         }
         return "idle";
       },
 
       // _unalias will return the base dimension/state with its alias removed
       // if it had one.  This is handy for sorting and filtering.
       _unalias: function(str) {
         var match = ALIAS_REGEXP.exec(str);
         if (match) {
           return match[1];
         }
         return str;
       },
     }
   })()
 </script>