Notification of string changes

Author: jerome mouneyrac
community block MDL-22890 change eldest for oldest


http://git.moodle.org/gw?p=moodle.git;a=commit;h=5773b42109ba1f3443c42524fb7de11161c39060
http://github.com/moodle/moodle/commit/5773b42109ba1f3443c42524fb7de11161c39060

+ 2.0 en [orderbyeldest,block_community]