Git commits in Moodle 2.7.6 by Damyon Wiese

commit 21d6db9b77b44c1e5bb699098ccbce7dddf354d2
Author: Damyon Wiese <damyon@moodle.com>
Date:   Thu, 19 Feb 2015 17:28:59 +0800
Tag:    v2.7.6

MDL-49240 webservices: core_get_string and friends bad lang handling

commit 21929ef07da02aabaa0fecfde36dc2a3a1046580
Author: Damyon Wiese <damyon@moodle.com>
Date:   Fri, 13 Feb 2015 11:41:43 +0800
Tag:    v2.7.6

MDL-49167 YUI: Fix for theme/yui_combo.php and $CFG->yuislashargs

commit 77d43805334742d332f169bd018b15a739748d02
Author: Damyon Wiese <damyon@moodle.com>
Date:   Fri, 30 Jan 2015 14:36:46 +0800
Tag:    v2.7.6

MDL-48543 Mathjax: Update default config for JAWS Math player