Use View::translate() instead of t() in the logout view script

refs #8626

application/views/scripts/authentication/logout.phtml

@@ -9,9 +9,9 @@
 -->
 <div class="content">
     <div class="alert alert-warning" id="logout-status">
-        <b><?= t('Logging out...'); ?></b>
+        <b><?= $this->translate('Logging out...'); ?></b>
         <br>
-        <?= t(
+        <?= $this->translate(
             'If this message does not disappear, it might be necessary to quit the'
             . ' current session manually by clearing the cache, or by closing the current'
             . ' browser session.'
@@ -19,7 +19,7 @@
     </div>
 
     <div class="container" >
-        <a href="<?= $this->href('dashboard/index'); ?>"><?= t('Login'); ?></a>
+        <a href="<?= $this->href('dashboard/index'); ?>"><?= $this->translate('Login'); ?></a>
     </div>
 </div>
 <script type="text/javascript">
@@ -41,7 +41,7 @@
             }
         } catch (e) {
         }
-        msg.html('<?= t('Logout successful!'); ?>');
+        msg.html('<?= $this->translate('Logout successful!'); ?>');
         msg.removeClass();
         msg.addClass('alert alert-success');
     });