Git commits in Moodle 3.5.1 by Dan Marsden

commit ac32f752d99eda18d13d6dbc1833a6d24c78d3c9
Author: Dan Marsden <dan@danmarsden.com>
Date:   Tue, 22 May 2018 14:39:52 +0800
Tag:    v3.5.1

MDL-57486 tool_recyclebin: Delete items when context already deleted.