Git commits in Moodle 3.4.0 by Pierre Guinoiseau

commit 58f266000988a7e60228835bc25096d875a4e3c2
Author: Pierre Guinoiseau <pierre.guinoiseau@catalyst.net.nz>
Date:   Thu, 11 May 2017 09:43:35 +0800
Tag:    v3.4.0-beta

MDL-58892 pix: update icon for Mahara