Git commits in Moodle 3.5.6 by Tobias Reischmann

commit eb29ebefb4ce6cac77e6d3a7d936a49486b31dba
Author: Tobias Reischmann <tobias.reischmann@wi.uni-muenster.de>
Date:   Mon, 29 Apr 2019 23:24:29 +0800
Tag:    v3.5.6

MDL-63959 mod_feedback: Add phpunit tests for get_pages in completion