Author: Amaia Anabitarte
MDL-76998 admin: Option to reset course indentation
http://git.moodle.org/gw?p=moodle.git;a=commit;h=75bf395e47737de5748ea96556fe42e258f42adf
http://github.com/moodle/moodle/commit/75bf395e47737de5748ea96556fe42e258f42adf
+ 4.0 en [resetindentation_title,core_admin]
+ 4.0 en [resetindentation_help,core_admin]
+ 4.0 en [resetindentation,core_admin]
+ 4.0 en [resetindentationsuccess,core_admin]