Most translation strings in *.po are empty, giving blank lines as output of command line tools in non-US-English locale

[michaelrsweet]

Version: 1.5.2
CUPS.org User: till.kamppeter

Most translation strings ("msgstr") in most of the locale/*.po files are empty:

msgstr ""

This leads to the original English string being translated with an empty string. For example with German (de) locale all output of the "lpstat" command are blank lines.

There should be either no blank translation strings or the translation function should keep the original English string if the translation is empty.

[michaelrsweet]

CUPS.org User: mike

Dupe of STR #4033, already fixed.