Add links to MP and resolve minor fixes

appengine/swarming/elements/res/imp/tasklist/task-list.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.
 
   This in an HTML Import-able file that contains the definition
   of the following elements:
 
     <task-list>
 
@@ skipping 46 matching lines @@
     <url-param name="s"
       value="{{_sortstr}}"
       default_value="created_ts:desc">
     </url-param>
 
     <swarming-app
       client_id="[[client_id]]"
       auth_headers="{{_auth_headers}}"
       permissions="{{_permissions}}"
       signed_in="{{_signed_in}}"
+      server_details="{{_server_details}}"
       busy="[[_or(_busy1,_busy2)]]"
       name="Swarming Task List">
 
       <h2 hidden$="[[_signed_in]]">You must sign in to see anything useful.</h2>
 
       <div hidden$="[[_not(_signed_in)]]">
         <task-list-data
           id="data"
           auth_headers="[[_auth_headers]]"
           query_params="[[_query_params]]"
@@ skipping 120 matching lines @@
                       class="center"
                       href$="[[_taskLink(task.deduped_from)]]"
                       target="_blank">
                       [[_column('deduped_from',task)]]
                   </a>
                 </td>
 
                 <td hidden$="[[_hide('sk_revision', _columns.*)]]">
                   <a
                       class="center"
-                      href$="[[_skLink(task)]]"
+                      href$="[[_skLink(task, _server_details.sk_revision_prefix)]]"
                       target="_blank">
                       [[_column('sk_revision',task)]]
                   </a>
                 </td>
 
                 <template
                     is="dom-repeat"
                     items="[[_plainColumns]]"
                     as="c">
                   <td hidden$="[[_hide(c)]]">
@@ skipping 23 matching lines @@
         <paper-button dialog-dismiss autofocus>No</paper-button>
         <paper-button dialog-confirm>Yes</paper-button>
       </div>
     </paper-dialog>
 
     <error-toast></error-toast>
 
   </template>
   <script>
   (function(){
-    var specialColumns = ["deduped_from", "name", "state", "bot"];
+    var specialColumns = ["deduped_from", "name", "state", "bot", "sk_revision"];
 
     // Given a time attribute like "abandoned_ts", humanTime returns a function
     // that returns the human-friendly version of that attribute. The human
     // friendly time was created in task-list-data.
     function humanTime(attr) {
       return function(task) {
         return this._attribute(task, "human_" + attr)[0];
       }
     }
     var columnMap = {
@@ skipping 153 matching lines @@
       },
 
       reload: function() {
         if (!this._auth_headers || !this._query_params) {
           return;
         }
         var url = "/_ah/api/swarming/v1/tasks/list?" + sk.query.fromParamSet(this._query_params);
         this.$.page_tasks.load(url,this._auth_headers);
       },
 
-      _skLink: function(task) {
+      _skLink: function(task, sk_revision_prefix) {
         var r = this._attribute(task, "sk_revision")[0];
-        if (r === "none") {
+        if (r === "none" || !sk_revision_prefix) {
           return false;
         }
-        return "https://skia.googlesource.com/skia/+/" + r;
+        return sk_revision_prefix + r;
       },
 
       _tag: function(task, col) {
         if (!task || !task.tagMap) {
           return undefined;
         }
         return task.tagMap[col];
       },
 
       _taskClass: function(task) {
         return this.stateClass(this._column("state", task));
       }
     });
   })();
   </script>
 </dom-module>