Git commits in Moodle 3.7.x by Thomas Korner

commit ccc1aaed2259e179befd974a32b1905d4377abe3
Author: Thomas Korner <thomas.korner@let.ethz.ch>
Date:   Fri, 05 Apr 2019 19:51:53 +0800
Tag:    v3.7.0-beta

MDL-65279 core: typo in categoriesandcourses fixed