Author: Davo Smith
MDL-31642 added 'max attachments' to filemanager and 'drag and drop' message inside the box
http://git.moodle.org/gw?p=moodle.git;a=commit;h=adce023069ddb110e1fb971f5151de665b6ed764
http://github.com/moodle/moodle/commit/adce023069ddb110e1fb971f5151de665b6ed764
+ 2.3 en [dndenabled_inbox,core]
+ 2.3 en [maxsizeandattachments,core]