MDL-30007 standardise data preset subplugin version and lang files

mod/data/preset/imagegallery/lang/en/datapreset_imagegallery.php

@@ -24,3 +24,4 @@
  */
 
 $string['modulename'] = 'Image gallery';
+$string['pluginname'] = 'Image gallery';

mod/data/preset/imagegallery/version.php

@@ -0,0 +1,28 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle 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 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * @package    datapreset
+ * @subpackage imagegallery
+ * @copyright  1999 onwards Martin Dougiamas (http://dougiamas.com)
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+$plugin->version   = 2011112900;        // The current plugin version (Date: YYYYMMDDXX)
+$plugin->requires  = 2011112900;        // Requires this Moodle version
+$plugin->component = 'datapreset_imagegallery'; // Full name of the plugin (used for diagnostics)