Git commits in Moodle 2.8.x by Sam Chaffee

commit f0d7264769cb56740094d2d0defc58d900987bd3
Author: Sam Chaffee <sam@moodlerooms.com>
Date:   Sat, 03 Oct 2015 01:28:15 +0800
Tag:    v2.8.9

MDL-51514 gradebook: Optimize set_usedinaggregation query for MySQL

commit 0f5e439e4b6a05aae7585578f9fc32d269bf89a0
Author: Sam Chaffee <sam@moodlerooms.com>
Date:   Tue, 15 Jul 2014 06:26:54 +0800
Tag:    v2.8.0-beta

MDL-46370 Ajax and Javascript - Fixes docked blocks not expanding when using dock on right

commit 435c709c848651542011f8ef41056ca5d321da41
Author: Sam Chaffee <sam@moodlerooms.com>
Date:   Wed, 21 May 2014 05:34:21 +0800
Tag:    v2.8.0-beta

MDL-45645 mod_lti Add custom LTI request parameter ext_user_username

commit a8e99c6f725e68c7e7c5c6bc0878f13485a1b84f
Author: Sam Chaffee <sam@moodlerooms.com>
Date:   Thu, 01 May 2014 01:55:57 +0800
Tag:    v2.8.0-beta

MDL-45767: Fixed DB error when returning to course from external tool