Git commits in Moodle 2.9.4 by Frederic Massart

commit 0baa4c581e659c03c0b35208da2c3d640dc51c6b
Author: Frederic Massart <fred@moodle.com>
Date:   Wed, 25 Nov 2015 13:03:25 +0800
Tag:    v2.9.4

MDL-52160 navigation: Mark category and module settings nodes as branch

commit 986906d64b4e69567584858d816b149fffe23e8b
Author: Frederic Massart <fred@moodle.com>
Date:   Mon, 16 Nov 2015 19:28:06 +0800
Tag:    v2.9.4

MDL-52160 navigation: Really remove module settings empty nodes

commit 411a25c7eb98d6fd826fe96ea3196d365ac7402a
Author: Frederic Massart <fred@moodle.com>
Date:   Fri, 13 Nov 2015 01:34:18 +0800
Tag:    v2.9.4

MDL-50564 atto: Require atto_menu in atto_plugin