Git commits in Moodle 3.1.x by Matt Davidson

commit 31a9b403ca58febc6256d9c069665d0e2fd5e5fb
Author: Matt Davidson <davidso1@rose-hulman.edu>
Date:   Mon, 12 Dec 2016 21:18:17 +0800
Tag:    v3.1.4

MDL-56810 unoconv: task fails if user removed


commit c79398ea60a55947a18cd2032f53c45a2fdd8799
Author: Matt Davidson <davidso1@rose-hulman.edu>
Date:   Mon, 01 Aug 2016 22:43:06 +0800
Tag:    v3.1.2

MDL-55246 assign: convert files with spaces