Git commits in Moodle 2.9.3 by Dani Palou

commit b26b2407908abb1a8a4d37aebc18e03139c9776f
Author: Dani Palou <dani@moodle.com>
Date:   Mon, 26 Oct 2015 18:02:26 +0800
Tag:    v2.9.3

MDL-51861 enrol: Don't get all parts in get_enrolled_users with groups


commit 89e0f80a84d58aefede415d8d987c19047093b92
Author: Dani Palou <dani@moodle.com>
Date:   Tue, 20 Oct 2015 15:41:23 +0800
Tag:    v2.9.3

MDL-51829 admin: Set userquota setting as PARAM_INT


commit 6fb37f884fdd6c5fe391641cd7ac4c4068459303
Author: Dani Palou <dani@moodle.com>
Date:   Fri, 09 Oct 2015 15:23:53 +0800
Tag:    v2.9.3

MDL-51685 user: Support gravatar images in user_get_user_details