Git commits in Moodle 2.4.x by Sun Zhigang

commit a572f17d41bda8d7b885537445a1d2a60e1723f1
Author: Sun Zhigang <sunner@gmail.com>
Date:   Tue, 22 May 2012 19:36:50 +0800
Tag:    v2.4.0-beta

MDL-31201 wiki: fix a hardcoded string

commit b5b7d9d91acf45e8519375378992e3bac7946ddf
Author: Sun Zhigang <sunner@gmail.com>
Date:   Sat, 02 Jul 2011 18:41:26 +0800
Tag:    v2.4.0-beta

MDL-28155 mod_assignment - Fix an ugly hack