Avoid code reviews for minor translation changes.

If the only changes are the creation date or comments, don't send a
review. Resolves bug 1095183.

Change-Id: Idbc3f313d32b60563f4eff5fd97784a25fb8c428
Reviewed-on: https://review.openstack.org/18803
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Approved: James E. Blair <corvus@inaugust.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins