Git commits in Moodle 2.5.x by Mark Johnson

commit b74c9a9fec07ee9a9c4d0b43d928f16e0d07accb
Author: Mark Johnson <mark.johnson@it.ox.ac.uk>
Date:   Thu, 21 Feb 2013 20:55:45 +0800
Tag:    v2.5.0-beta

MDL-33996 Forum search. Stop displaying raw search strings to users