Git commits in Moodle 3.0.4 by spvickers

commit b67fda1e3149aa01d096ab6443d2218ed5fc6710
Author: spvickers <github@spvickers.freeserve.co.uk>
Date:   Sun, 05 Apr 2015 18:05:20 +0800
Tag:    v3.0.4

MDL-49754 mod_lti: Fixes to JSON format