config_service: release the UI to the front page

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 41 matching lines @@
       .title {
         padding-bottom: 1%;
         padding-top: 5%;
       }
 
       .paper-green { color: var(--paper-green-600); }
 
       .paper-red { color: var(--paper-red-600); }
 
       .paper-grey { color: var(--paper-grey-600); }
-
     </style>
 
     <iron-ajax
         auto
         id="requestConfigs"
         url="/_ah/api/config/v1/config-sets?config_set=[[category]]/[[name]][[route.path]]&include_files=true&include_last_import_attempt=true"
         handle-as="json"
         on-response="_onGotConfigFiles"
         headers="[[auth_headers]]">
     </iron-ajax>
@@ skipping 174 matching lines @@
       },
 
       _onRefreshError: function() {
         this.isRefreshing = false;
         this.refreshMessage = "Error: Files could not be refreshed.";
         this.fire('refreshError');
       }
     });
   </script>
 </dom-module>