Git commits in Moodle x.x.x by Jason Hardin

commit 4f758d7716d322f777e3222b224f74cfcdc9c786
Author: Jason Hardin <jason@moodlerooms.com>
Date:   Sat, 22 Aug 2015 04:20:27 +0800
Tag:    v3.0.0-beta

MDL-50936 Atto: Add missing math equation buttons