Git commits in Moodle 3.3.4 by Tim Lock

commit d1c7b42f57a7d0eccb85548ad395103b3d61d0ed
Author: Tim Lock <tim@netspot.com.au>
Date:   Mon, 13 Nov 2017 05:20:46 +0800
Tag:    v3.3.4

MDL-58817 mod_lti: cartridge: maintain custom icons

commit 4826b9d4543e0671a1a513d44135fbd1466f563b
Author: Tim Lock <tim.lock@netspot.com.au>
Date:   Wed, 13 May 2015 11:49:18 +0800
Tag:    v3.3.4

MDL-34161 mod_lti: Added Behat tests