config_service: add ref config set type

appengine/config_service/ui/src/config-ui/config-set.html

 <!--
   Copyright 2017 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.
 -->
 
 <link rel="import" href="config-file-card.html">
 <link rel="import" href="../../bower_components/iron-ajax/iron-ajax.html">
 <link rel="import" href="../../bower_components/iron-icons/iron-icons.html">
 <link rel="import" href="../../bower_components/paper-item/paper-item.html">
@@ skipping 95 matching lines @@
           <paper-icon-button id="force-refresh"
                              icon="icons:refresh"
                              on-tap="_forceRefresh">
           </paper-icon-button>
           <paper-tooltip for="force-refresh" offset="0">
             Re-import the config-set from the repository.
           </paper-tooltip>
         </template>
       </div>
       <div class="category">
-        <p>[[_formatCategory(category)]]</p>
+        <p>[[_formatCategory(category, route.path)]]</p>
         <template is="dom-if" if="[[_not(isLoading)]]">
           <template is="dom-if" if="[[lastImportAttempt]]">
             <template is="dom-if" if="[[_not(lastImportAttempt.success)]]">
               Last import attempt failed: [[lastImportAttempt.message]]
             </template>
             <template is="dom-if" if="[[lastImportAttempt.success]]">
               Last import succeeded.
             </template>
           </template>
           <template is="dom-if" if="[[_not(lastImportAttempt)]]">
@@ skipping 106 matching lines @@
           } else {
             this.$.requestConfigs.generateRequest();
           }
         }
       },
 
       _isEmpty: function(list) {
         return list.length === 0;
       },
 
-      _formatCategory: function(category) {
+      _formatCategory: function(category, name) {
+        if (name.includes("/refs")) return "Ref";
         if (category === "projects") return "Project";
         if (category === "services") return "Service";
       },
 
       _onCompleteRefresh: function() {
         this.isRefreshing = false;
         this.refreshMessage = "Refresh successful.";
         this.fire('refreshComplete');
       },
 
@@ skipping 36 matching lines @@
           this.errorMessage = "Internal server error.";
         } else {
           this.errorMessage = "Error occured. Try again later.";
         }
         this.fire('fetchError');
       }
 
     });
   </script>
 </dom-module>