gradeexport_csv.php

1. 檔案內有關 txt 字串，都改成 csv。

   [root@moodle grade]# diff -urNwbBE export/txt/lang/en/gradeexport_txt.php export/csv/lang/en/gradeexport_csv.php
   --- export/txt/lang/en/gradeexport_txt.php	2010-07-05 08:01:13.000000000 +0800
   +++ export/csv/lang/en/gradeexport_csv.php	2013-03-25 13:41:22.000000000 +0800
   @@ -16,13 +16,13 @@
    // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
    
    /**
   - * Strings for component 'gradeexport_txt', language 'en', branch 'MOODLE_20_STABLE'
   + * Strings for component 'gradeexport_csv', language 'en', branch 'MOODLE_20_STABLE'
     *
   - * @package   gradeexport_txt
   + * @package   gradeexport_csv
     * @copyright 1999 onwards Martin Dougiamas  {@link http://moodle.com}
     * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
     */
   
   -$string['pluginname'] = 'Plain text file';
   -$string['txt:publish'] = 'Publish TXT grade export';
   -$string['txt:view'] = 'Use text grade export';
   +$string['pluginname'] = 'Plain csv file';
   +$string['csv:publish'] = 'Publish CSV grade export';
   +$string['csv:view'] = 'Use csv grade export';