run_tests.sh --makemessages do not need to update PO files of all languages

[Akihiro Motoki]

./run_tests.sh --makemessages updates PO files of all languages, but actually what we need to update is the PO files in English (source language of the translations). For other languages, the PO files should be updated by importing the translations from Transifex.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/46236

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/46236
Committed: http://github.com/openstack/horizon/commit/6caa19dd6e1a26fcb0ce8bee1ec98f0fb274fdf2
Submitter: Jenkins
Branch: master

commit 6caa19dd6e1a26fcb0ce8bee1ec98f0fb274fdf2
Author: Akihiro MOTOKI <email address hidden>
Date: Thu Sep 12 18:54:55 2013 +0900

    ./run_tests.sh --makemessages update English PO files only

    Closes-Bug: #1224388

    We don't need to update PO files of all languages.
    PO files of languages other than English should be update by
    importing translations from Transifex.

    This commit changes "run_tests.sh --makemessages" only updates
    English PO files. This makes a patch updating PO files shorter
    and helps reviewers to check it.

    Change-Id: I5410a06b0bcb0f42c5a0853f95a3fe2087519d51