Git commits in Moodle 2.3.7 by Mark Nelson

commit 955a081e3a9ed5199354942044e4dbec0486e979
Author: Mark Nelson <markn@moodle.com>
Date:   Tue, 07 May 2013 12:59:58 +0800
Tag:    v2.3.7

MDL-39535 grade: only display grade errors once

commit b5163c51328cb4a60cb8692e823ac7a8ec46301e
Author: Mark Nelson <markn@moodle.com>
Date:   Tue, 23 Apr 2013 17:09:49 +0800
Tag:    v2.3.7

MDL-39303 mod_forum: prevent user from submitting when post threshold reached

commit b4eb152f694bca72be6a9cd6abedf70e11fc7e1c
Author: Mark Nelson <markn@moodle.com>
Date:   Thu, 18 Apr 2013 16:58:29 +0800
Tag:    v2.3.7

MDL-39192 mod_forum: do not need to check the posting threshold when editing a post

commit 534707ff8de0fb695bf78517b4a3a798f554cab3
Author: Mark Nelson <markn@moodle.com>
Date:   Wed, 17 Apr 2013 14:52:48 +0800
Tag:    v2.3.7

MDL-39185 mod_forum: declare new object before creating member variables to prevent Strict Standards warning