Git commits in Moodle 2.9.4 by Tim Hunt

commit 89db762c0e221e6f1cc9a25e3524f315d600cb70
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Mon, 14 Dec 2015 04:27:54 +0800
Tag:    v2.9.4

MDL-52427 questions: all parts of a Q should be clearfix


commit ae5cf0490fd861b76df9a53674c6857b936f8b11
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Tue, 24 Nov 2015 23:58:54 +0800
Tag:    v2.9.4

MDL-52292 block testing generators: improve the API


commit d5956a3f17f2deeaa29510e041f6707e8f37c4ce
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Mon, 16 Nov 2015 22:37:42 +0800
Tag:    v2.9.4

MDL-52166 gradebook: overview report fails with separate groups