Git commits in Moodle 2.8.8 by Tim Lock

commit 7fb8fcfd9dbe36903b920e138176d48b10938909
Author: Tim Lock <tim.lock@netspot.com.au>
Date:   Thu, 23 Jul 2015 12:01:26 +0800
Tag:    v2.8.8

MDL-42670 mod_assign: Fix recent activity block when blind marking is on