Author: Davo Smith
MDL-33927 Filemanager - enforce the maxfiles limit on form submission
http://git.moodle.org/gw?p=moodle.git;a=commit;h=548f536a00ccc484086f235989ed618f76854d3c
http://github.com/moodle/moodle/commit/548f536a00ccc484086f235989ed618f76854d3c
+ 2.3 en [err_maxfiles,core_form]