Git commits in Moodle 2.9.4 by Vadim Dvorovenko

commit 7bf842111fff3eba2ee60ba328dac82515340a9d
Author: Vadim Dvorovenko <Vadimon@mail.ru>
Date:   Wed, 18 Nov 2015 09:44:04 +0800
Tag:    v2.9.4

MDL-52029 installer: Unstyled installer if display_errors is on