Git commits in Moodle 2.6.x by Anton Fletcher

commit 19b2d3fa9c9577fc960631c89cc3b3ae695bba9b
Author: Anton Fletcher <salmonmoose@gmail.com>
Date:   Fri, 04 Oct 2013 14:16:40 +0800
Tag:    v2.6.0-rc1

MDL-35146 mod_wiki: fixed issue where pages for deleted groups caused an error on restore