Git commits in Moodle 3.0.4 by Panagiotis Nikoloutsopoulos

commit 6c0ec8dd4cc80ca7e3262c75db95f05856f5a61b
Author: Panagiotis Nikoloutsopoulos <nikol.panagiotis@gmail.com>
Date:   Mon, 14 Mar 2016 10:48:23 +0800
Tag:    v3.0.4

MDL-52944 atto: Contenteditable command 'FormatBlock' set to 'p'

commit 58f4420d0f3deeb0fcd7ad3247ea5bcbbbe00b39
Author: Panagiotis Nikoloutsopoulos <nikol.panagiotis@gmail.com>
Date:   Mon, 14 Mar 2016 10:35:02 +0800
Tag:    v3.0.4

MDL-52550 atto: Added preventDefaults for events dragover and dragenter