Git commits in Moodle 2.4.7 by Juan Leyva

commit e5663dfd7051e8494ecd1117c8fd38d61dbc2642
Author: Juan Leyva <juanleyvadelgado@gmail.com>
Date:   Thu, 31 Oct 2013 18:18:24 +0800
Tag:    v2.4.7

MDL-42617 Add support for frozen fields in searchableselector form elements