Git commits in Moodle 2.8.9 by Tim Lock

commit b68783c870eb46e615e02fff7a74eb46cfd9a0c5
Author: Tim Lock <tim.lock@netspot.com.au>
Date:   Thu, 17 Sep 2015 09:30:08 +0800
Tag:    v2.8.9

MDL-51440 gradeimport_direct: fix config require statement


commit e87c74e9f5cbe6f75fdc612c3b7804e99d107dc0
Author: Tim Lock <tim.lock@netspot.com.au>
Date:   Thu, 20 Aug 2015 06:08:14 +0800
Tag:    v2.8.9

MDL-46710 mod_lti: fix logging and completion tracking in new windows