Git commits in Moodle 3.3.4 by Tobias Reischmann

commit 702605b2c9a9dcb740b67dddc2d8a2eb74c21afc
Author: Tobias Reischmann <tobias.reischmann@wi.uni-muenster.de>
Date:   Mon, 06 Nov 2017 20:29:11 +0800
Tag:    v3.3.4

MDL-60669 forum: Added duplicate check for restoring forum subscriptions

commit 8b31cbead84c76037b98e9ec78cc48e95ec7da11
Author: Tobias Reischmann <tobias.reischmann@wi.uni-muenster.de>
Date:   Thu, 12 Oct 2017 21:37:27 +0800
Tag:    v3.3.4

MDL-27886 backup: Added behat tests for user data settings

commit e1859318938cf1ed57d11af685740007e8ffe0c3
Author: Tobias Reischmann <tobias.reischmann@wi.uni-muenster.de>
Date:   Thu, 12 Oct 2017 21:32:15 +0800
Tag:    v3.3.4

MDL-27886 backup: Decision if a setting is fixed based on level

commit 0a8086fb97f855ba7746c28dae7c5d1d3d11935b
Author: Tobias Reischmann <tobias.reischmann@wi.uni-muenster.de>
Date:   Thu, 12 Oct 2017 21:16:49 +0800
Tag:    v3.3.4

MDL-27886 backup: Enabled unlocking of backup settings