Manually update all translated strings

Git has been updating the localization (.po) files, and as a result, the
'tx pull -a' command, run by jenkins in the periodic translation jobs,
has been failing to pull new strings from transifex.

This patch is a manual pull from transifex to update all the strings
for inclusion in Icehouse RC1.

A longer-term fix has been proposed to -infra here:
  https://review.openstack.org/#/c/84191/

Change-Id: I9fba04d2369b36fe4902e388774506cd8e6ea377
Closes-bug: #1298645