Author: ferranrecio
MDL-80951 backup: add accessibility labels to schema fields
http://git.moodle.org/gw?p=moodle.git;a=commit;h=5b7fc8915278fa4c1735182fea79928a8719a25a
http://github.com/moodle/moodle/commit/5b7fc8915278fa4c1735182fea79928a8719a25a
+ 4.5 en [includeuserinfo_instance,core_backup]
+ 4.5 en [section_prefix,core_backup]