Git commits in Moodle 3.1.13 by Andrew Nicols

commit 9103f6ca8ad66a15481548eff97a74666dcd6a30
Author: Andrew Nicols <andrew@nicols.co.uk>
Date:   Sun, 20 May 2018 15:14:50 +0800
Tag:    v3.1.13

MDL-62500 tag: Update checkbox label when updating tag