Refactor the comment module as part of ticket: #917 "Remove Rest Controller"

* Remove the methods create, update, delete, get_edit_form as there are not used
* Change the return when a comment is created to return the html for the new comment.
  This saves a second get request to down load the comment.

modules/comment/views/comment.html.php

@@ -8,9 +8,9 @@
            width="40"
            height="40" />
     </a>
-    <?= t("on %date_time, %author_name said",
+    <?= t("on %date_time,  <a href=\"#\">%name</a> said",
           array("date_time" => gallery::date_time($comment->created),
-                "author_name" => html::clean($comment->author_name()))) ?>
+                "name" => html::clean($comment->author_name()))) ?>
   </p>
   <div>
   <?= nl2br(html::purify($comment->text)) ?>