Git commits in Moodle 2.8.8 by Daniel Thies

commit 9957c7f7fde06382e871a236e31ca98f24cbe314
Author: Daniel Thies <dthies@ccal.edu>
Date:   Mon, 17 Aug 2015 04:10:02 +0800
Tag:    v2.8.8

MDL-46387 editor_atto: Add behat test for sub/sup

commit dc7e49f611caac9d045c36d6078d45b876becb75
Author: Daniel Thies <dthies@ccal.edu>
Date:   Wed, 05 Aug 2015 19:56:47 +0800
Tag:    v2.8.8

MDL-46387 editor-atto: Toggle sub/sup tags using rangy