Git commits in Moodle 3.1.5 by Andrew Nicols

commit 188892a7a84be61c3bd580c5f557fa1cde6ef692
Author: Andrew Nicols <andrew@nicols.co.uk>
Date:   Tue, 28 Feb 2017 09:07:50 +0800
Tag:    v3.1.5

MDL-55547 tool_monitor: Coding style fixes

commit a04076a1f216a0a43552a38cf25a5677689a0838
Author: Andrew Nicols <andrew@nicols.co.uk>
Date:   Thu, 02 Feb 2017 11:32:09 +0800
Tag:    v3.1.5

weekly release 3.1.4+

commit 087e52eccf50547e93f7088b0d531b4beccb1e81
Author: Andrew Nicols <andrew@nicols.co.uk>
Date:   Thu, 19 Jan 2017 13:47:40 +0800
Tag:    v3.1.5

MDL-57639 mod_forum: Update to use correct variable name

commit 26c76fcc0b1dee0d0f86ce0a74871174c20e4260
Author: Andrew Nicols <andrew@nicols.co.uk>
Date:   Thu, 19 Jan 2017 12:17:52 +0800
Tag:    v3.1.5

weekly release 3.1.4+

commit 70b465a75c9faa6d8edc106e23ad13cce605a91c
Author: Andrew Nicols <andrew@nicols.co.uk>
Date:   Thu, 09 Jun 2016 08:53:46 +0800
Tag:    v3.1.5

MDL-57766 assign: backport MDL-54872