Author: David Matamoros
MDL-71943 core: Dynamic (AJAX) tabs in Moodle LMS
http://git.moodle.org/gw?p=moodle.git;a=commit;h=5909d5b0ce4fadb8f204e154f9bb653ba45894a2
http://github.com/moodle/moodle/commit/5909d5b0ce4fadb8f204e154f9bb653ba45894a2
+ 4.0 en [nopermissiontoaccesspage,core_error]