Developer credits

Git commits in Moodle x.x.x by Ferenc Lengyel

commit bfd6727b426380eec8e1277e60297f2ea0473a22
Author: Ferenc Lengyel <lengyelke@gmail.com>
Date:   Mon, 14 Sep 2015 20:23:51 +0800
Tag:    v2.8.9

MDL-51402 quiz: notification emails should respect grouping

commit e5cd1282a11573e5a8ff0baabd031859ed74a06e
Author: Ferenc Lengyel <lengyelke@gmail.com>
Date:   Mon, 14 Sep 2015 20:23:51 +0800
Tag:    v2.9.3

MDL-51402 quiz: notification emails should respect grouping

commit efc76e9e90ddf75529e88889d68969ecf891d366
Author: Ferenc Lengyel <lengyelke@gmail.com>
Date:   Mon, 14 Sep 2015 20:23:51 +0800
Tag:    v3.0.0-beta

MDL-51402 quiz: notification emails should respect grouping