Git commits in Moodle 2.8.6 by Jetha Chan

commit a34b18ad218105a20cc0ea88a363f29630923a36
Author: Jetha Chan <jetha@moodle.com>
Date:   Mon, 09 Mar 2015 17:22:22 +0800
Tag:    v2.8.6

MDL-49442 javascript: add handlebars hashtable to support get_string