Author: Ferran Recio
MDL-77182 core: add debug template info setting
A new developer setting that adds comments in the page HTML specifying
which template is used to render each part of the page. It can be set
form the site admin development tab and it is stored
as $CFG->debugtemplateinfo.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=135c8a999cbad98cb63b78c26e418a4a8580e213
http://github.com/moodle/moodle/commit/135c8a999cbad98cb63b78c26e418a4a8580e213
+ 4.2 en [debugtemplateinfo,core_admin]
+ 4.2 en [debugtemplateinfo_desc,core_admin]