Author: Eloy Lafuente (stronk7)
MDL-43590 move unapprove to undo approval
http://git.moodle.org/gw?p=moodle.git;a=commit;h=7123ae8f9a841e2746f02bb003dbb08149f16eef
http://github.com/moodle/moodle/commit/7123ae8f9a841e2746f02bb003dbb08149f16eef
+ 2.7 en [data:approve,mod_data]
+ 2.7 en [disapprove,mod_data]
+ 2.7 en [disapprove,mod_glossary]
+ 2.7 en [glossary:approve,mod_glossary]