Git commits in Moodle 2.8.4 by Simey Lameze

commit 56145a4d6e90fb06eace2d7ebec771b1ed841846
Author: Simey Lameze <simey@moodle.com>
Date:   Mon, 23 Feb 2015 14:26:58 +0800
Tag:    v2.8.4

MDL-48807 core_task: change create_contexts_task to daily frequency

commit 34fcdf2da4100e8d798f58c3cd25b22e25eb5ed4
Author: Simey Lameze <simey@moodle.com>
Date:   Mon, 23 Feb 2015 14:25:21 +0800
Tag:    v2.8.4

MDL-48807 accesslib: table locking fix on all create_level_instance

commit 64e2179478849ec09c3537716e70ae8a1684b58b
Author: Simey Lameze <simey@moodle.com>
Date:   Wed, 11 Feb 2015 14:14:43 +0800
Tag:    v2.8.4

MDL-49084 core_tag: add capability check to flag as inappropriate action

commit 9461ad93fd42e330bd71b44a81b15426dc51035a
Author: Simey Lameze <simey@moodle.com>
Date:   Tue, 10 Feb 2015 12:47:34 +0800
Tag:    v2.8.4

MDL-48679 gradebook: fix grade publishing feature

commit 32a491a8d2318100597719749ba847cb34891bcb
Author: Simey Lameze <simey@moodle.com>
Date:   Tue, 10 Feb 2015 12:46:40 +0800
Tag:    v2.8.4

MDL-48679 gradebook: helper methods for grade publishing