Git commits in Moodle 3.1.0 by KeenRivals

commit 83ea83ec198a8f1fc42658e57edd22af11541b5c
Author: KeenRivals <KeenRivals@users.noreply.github.com>
Date:   Sun, 21 Feb 2016 04:22:19 +0800
Tag:    v3.1.0-beta

MDL-50175 graphics: Optimized SVGs with SVGO.

commit 26c19b02d55ca115cab2ec143d569f06a3f2790c
Author: KeenRivals <KeenRivals@users.noreply.github.com>
Date:   Sun, 21 Feb 2016 04:16:00 +0800
Tag:    v3.1.0-beta

MDL-50175 graphics: Optimized PNG images with optipng