FIX: Improved username alignment

assets/javascripts/discourse/templates/admin/plugins-explorer.hbs

@@ -161,9 +161,11 @@
                 </a>
               </td>
               <td class="query-created-by">
-                <a href="/users/{{query.username}}/activity">
-                  <medium>{{query.username}}</medium>
-                </a>
+                {{#if query.username}}
+                  <a href="/users/{{query.username}}/activity">
+                    <medium>{{query.username}}</medium>
+                  </a>
+                {{/if}}
               </td>
               <td class="query-created-at"><medium>{{bound-date query.last_run_at}}</medium></td>
             </tr>

assets/stylesheets/explorer.scss

@@ -219,7 +219,6 @@
 
 .recent-queries {
   tr a {
-    display:block;
     width:100%;
     height: 100%;
     color: inherit; 
@@ -230,7 +229,7 @@
     }
   .user {
       width: 20%;
-      padding-left: 1em;
+      text-align: center;
   }
   .query-created-at {
     color: $secondary-medium;
@@ -240,6 +239,8 @@
   } 
   .query-created-by {
     color: $primary-high;
+    text-align: center;
+    vertical-align: middle;
   }  
   tr {
     height: 2px;