Author: Simey Lameze
MDL-52781 core_user: improve core_user::fill_properties_cache()
http://git.moodle.org/gw?p=moodle.git;a=commit;h=4ce0931462ae6b12b95175bcb9ab9e02d64f223e
http://github.com/moodle/moodle/commit/4ce0931462ae6b12b95175bcb9ab9e02d64f223e
+ 3.1 en [invaliduserdata,core_error]