Git commits in Moodle 3.1.1 by Mike Churchward

commit bbe5d6c8279bc9ad774cf86636caa934c21b2eaf
Author: Mike Churchward <mike@remote-learner.net>
Date:   Thu, 02 Jun 2016 22:32:43 +0800
Tag:    v3.1.1

MDL-54805 portfolio_download: Adding a 'require' of necessary library file