Git commits in Moodle 2.4.5 by Ashley Holman

commit 24a3f392ba69c9e0d4915cf784d4a84b8e02a726
Author: Ashley Holman <ashley@netspot.com.au>
Date:   Wed, 29 May 2013 11:57:33 +0800
Tag:    v2.4.5

MDL-39743 assign: Fix missing capability check for "grant extension"