Git commits in Moodle 2.9.0 by papillon

commit 28d27e85d70614cb69458cde3973c9729096fc11
Author: papillon <papillon@muf.biglobe.ne.jp>
Date:   Mon, 16 Mar 2015 23:59:11 +0800
Tag:    v2.9.0-rc1

MDL-49311 user: fix default sorting problem