Git commits in Moodle 3.6.x by Andreas Wagner

commit 1f7b1ad0f28860c0f6bc6dfac51df9887e2ebfdc
Author: Andreas Wagner <awagner@gmx.de>
Date:   Sun, 18 Nov 2018 23:34:05 +0800
Tag:    v3.6.3

MDL-60972 core_course: delete section files, when section is deleted.

commit 288cbbf2d59cf6c986e50c108d6e659e166f00ee
Author: Andreas Wagner <awagner@gmx.de>
Date:   Wed, 13 Sep 2017 17:43:25 +0800
Tag:    v3.6.0-beta

MDL-60114 mod_data: adding db activity lost radio field choose option