Git commits in Moodle 2.3.7 by Sam Hemelryk

commit c9b3e9eb23a90f7b914aa79e762c5e5de5fefcea
Author: Sam Hemelryk <sam@moodle.com>
Date:   Wed, 01 May 2013 06:40:54 +0800
Tag:    v2.3.7

MDL-39432 course: converted closures to lambda functions


commit 0f16db943cb61091ab2b7c7016a8987616913d0f
Author: Sam Hemelryk <sam@moodle.com>
Date:   Tue, 09 Apr 2013 08:06:26 +0800
Tag:    v2.3.7

MDL-38442 navigation: set_expansion_limit now only hides structural nodes


commit 4688b27ab34ba6182522918eb997d7092003ae78
Author: Sam Hemelryk <sam@moodle.com>
Date:   Wed, 20 Mar 2013 12:27:08 +0800
Tag:    v2.3.7

MDL-38055 course: fixed double encoding of title properties