Author: Ferran Recio
MDL-73547 core_courseformat: enable course index cache
Adding caches to the course editor reactive state. The patch improve the
course index loading.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=c64bef51a9fb1b9db9959a4ab3c3a8c791b79a6a
http://github.com/moodle/moodle/commit/c64bef51a9fb1b9db9959a4ab3c3a8c791b79a6a
+ 4.0 en [cachedef_courseeditorstate,core_cache]