Git commits in Moodle 3.1.0 by Vadim Dvorovenko

commit e6b2598b75b3f32b61567f6a806eea5e9d98df30
Author: Vadim Dvorovenko <Vadimon@mail.ru>
Date:   Wed, 13 Apr 2016 14:37:59 +0800
Tag:    v3.1.0-beta

MDL-53799 Navigation: Text keys for questionbank


commit dd399f51abbab4819af19d6a522fac0f766aca40
Author: Vadim Dvorovenko <Vadimon@mail.ru>
Date:   Mon, 29 Feb 2016 00:43:47 +0800
Tag:    v3.1.0-beta

MDL-45835 group: events for groupings assign/unassign


commit 626ff7c8b89e64583939bd1f333aad8a9b5f234d
Author: Vadim Dvorovenko <Vadimon@mail.ru>
Date:   Wed, 18 Nov 2015 09:44:04 +0800
Tag:    v3.1.0-beta

MDL-52029 installer: Unstyled installer if display_errors is on