Rename theme callback helpers from xxx_block to xxx_theme to make room

for us to rename the dashboard helper to be a block helper since
sidebar blocks are not just in the dashboard.

modules/comment/helpers/comment_theme.php

@@ -0,0 +1,42 @@
+<?php defined("SYSPATH") or die("No direct script access.");
+/**
+ * Gallery - a web based photo album viewer and editor
+ * Copyright (C) 2000-2008 Bharat Mediratta
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+class comment_theme_Core {
+  static function head($theme) {
+    $url = url::file("modules/comment/js/comment.js");
+    return "<script src=\"$url\" type=\"text/javascript\"></script>\n";
+  }
+
+  static function photo_bottom($theme) {
+    $block = new Block;
+    $block->css_id = "gComments";
+    $block->title = t("Comments");
+
+    $view = new View("comments.html");
+    $view->comments = ORM::factory("comment")
+      ->where("item_id", $theme->item()->id)
+      ->where("state", "published")
+      ->orderby("created", "ASC")
+      ->find_all();
+
+    $block->content = $view;
+    $block->content .= comment::get_add_form($theme->item())->render("form.html");
+    return $block;
+  }
+}