* finish task #4757.

module/user/view/bug.html.php

@@ -33,7 +33,7 @@
   </nav>
 
   <div class='main-table'>
-    <table class='table has-sort-head'>
+    <table class='table has-sort-head tablesorter'>
       <thead>
         <tr class='colhead'>
           <th class='w-id'><?php echo $lang->idAB;?></th>
@@ -54,9 +54,9 @@
           <td><span class='<?php echo 'pri' . zget($lang->bug->priList, $bug->pri, $bug->pri)?>'><?php echo zget($lang->bug->priList, $bug->pri, $bug->pri)?></span></td>
           <td><?php echo $lang->bug->typeList[$bug->type]?></td>
           <td class='text-left nobr'><?php echo html::a($this->createLink('bug', 'view', "bugID=$bug->id"), $bug->title);?></td>
-          <td><?php echo $users[$bug->openedBy];?></td>
-          <td><?php echo $users[$bug->resolvedBy];?></td>
-          <td><?php echo $lang->bug->resolutionList[$bug->resolution];?></td>
+          <td><?php echo zget($users, $bug->openedBy);?></td>
+          <td><?php echo zget($users, $bug->resolvedBy);?></td>
+          <td><?php echo zget($lang->bug->resolutionList, $bug->resolution);?></td>
         </tr>
         <?php endforeach;?>
       </tbody>