Refactor all calls of p::clean() to SafeString::of() and p::purify() to SafeString::purify().

Removing any p::clean() calls for arguments to t() and t2() since their args are wrapped in a SafeString anyway.

modules/comment/views/comment.html.php

@@ -4,15 +4,15 @@
     <a href="#">
       <img src="<?= $comment->author()->avatar_url(40, $theme->url("images/avatar.jpg", true)) ?>"
            class="gAvatar"
-           alt="<?= p::clean($comment->author_name()) ?>"
+           alt="<?= SafeString::of($comment->author_name()) ?>"
            width="40"
            height="40" />
     </a>
     <?= t("on %date_time, %author_name said",
           array("date_time" => gallery::date_time($comment->created),
-                "author_name" => p::clean($comment->author_name()))) ?>
+                "author_name" => SafeString::of($comment->author_name()))) ?>
   </p>
   <div>
-  <?= nl2br(p::purify($comment->text)) ?>
+  <?= nl2br(SafeString::purify($comment->text)) ?>
   </div>
 </li>