Developer credits
Git commits in Moodle 2.7.3 by Andrew Schmadel
commit 19b0b0bb7fdc69f5dd84040b487546042f3e9a11 Author: Andrew Schmadel <aschmadel@learningobjects.com> Date: Sat, 23 Aug 2014 07:09:18 +0800 Tag: v2.7.3 MDL-46844 Embed LTI External Tools with an IFrame