Git commits in Moodle 3.1.x by Paul Nicholls

commit 6d1ee59af277970ebde7885855f7595dad3559cb
Author: Paul Nicholls <paul.nicholls@canterbury.ac.nz>
Date:   Fri, 15 Jan 2016 06:49:51 +0800
Tag:    v3.1.0-beta

MDL-52773 course: Fix section return from single section page

commit 3afe22b09ec448cfd3936ad784dcce61382a14b8
Author: Paul Nicholls <paul.nicholls@canterbury.ac.nz>
Date:   Thu, 07 Jan 2016 09:38:48 +0800
Tag:    v3.1.0-beta

MDL-52673 workshop: fix dndnotsupported message in assessment form

commit 30c52da9be6ef43b05807e2074e74fb675906e89
Author: Paul Nicholls <paul.nicholls@canterbury.ac.nz>
Date:   Wed, 11 Nov 2015 04:43:51 +0800
Tag:    v3.1.0-beta

MDL-42190 workshop: Add "sumbission_deleted" event

commit deabe48bc5d38d36eed96c676e91afb6c8fc21e0
Author: Paul Nicholls <paul.nicholls@canterbury.ac.nz>
Date:   Mon, 21 Sep 2015 12:21:53 +0800
Tag:    v3.1.0-beta

MDL-42190 workshop: Add the ability to delete submissions