Author: Rossiani Wijaya
MDL-34778 accessibility compliance for enrol: add label tag for input text
http://git.moodle.org/gw?p=moodle.git;a=commit;h=b7f0b0b12b603576ebefb5cd5ad41896e982f3ba
http://github.com/moodle/moodle/commit/b7f0b0b12b603576ebefb5cd5ad41896e982f3ba
+ 2.3 en [role_mapping_attribute,enrol_ldap]
+ 2.3 en [role_mapping_context,enrol_ldap]