Git commits in Moodle 3.2.x by Connor Sheremeta

commit bd937195eb83dc7c55269cc6e92cb99b10823340
Author: Connor Sheremeta <sheremet@ualberta.ca>
Date:   Wed, 30 Aug 2017 03:31:18 +0800
Tag:    v3.2.6

MDL-54540 lti: Add allowfullscreen attribute to LTI IFrames