Git commits in Moodle 2.7.2 by Tony Butler

commit a18e060c5b35beea719348d8aa99032910c1daa5
Author: Tony Butler <tonyjbutler@gmail.com>
Date:   Mon, 11 Aug 2014 20:58:40 +0800
Tag:    v2.7.2

MDL-46281 core_backup: Add class_exists check for backup_<mod>_activity_task


commit 7561f3d64acbe6214f771e7ad0198a6ca41de3fa
Author: Tony Butler <tonyjbutler@gmail.com>
Date:   Fri, 11 Jul 2014 21:39:14 +0800
Tag:    v2.7.2

MDL-43908 mod_assign: Order submissions by course id then cm id


commit a65c0da40d1cf5b964e2098340139eacb4fc53f0
Author: Tony Butler <tonyjbutler@gmail.com>
Date:   Fri, 11 Jul 2014 19:10:50 +0800
Tag:    v2.7.2

MDL-43908 mod_assign: Remove redundant code and improve SQL query


commit 1e072910261873282492a6951308297f8769b668
Author: Tony Butler <tonyjbutler@gmail.com>
Date:   Fri, 13 Jun 2014 17:36:09 +0800
Tag:    v2.7.2

MDL-43908 mod_assign: Prevent notifications for unavailable assignments


commit 1215c112c0686be9ab5f09b021643033b84af512
Author: Tony Butler <tonyjbutler@gmail.com>
Date:   Wed, 29 Jan 2014 20:01:53 +0800
Tag:    v2.7.2

MDL-43908 mod_assign: Defer notifications for unavailable assignments