Git commits in Moodle 2.9.4 by Henning Bostelmann

commit 6e1654b79bb811cb2779c544532e2ad240410e2e
Author: Henning Bostelmann <henning.bostelmann@york.ac.uk>
Date:   Tue, 10 Nov 2015 07:22:53 +0800
Tag:    v2.9.4

MDL-52086 output renderers: show subtree only when tab is activated