Added check when fetching and updating translations from Transifex

            if p.returncode == 0:

                # msgfmt output stats on stderr

                print("%s: %s" % (lang, errors.strip()))

            else:

                print("Errors happened when checking %s translation for %s:\n%s" % (

                    lang, name, errors))

def fetch(resources=None, languages=None):

    Fetch translations from Transifex, wrap long lines, generate mo files.

    """

    locale_dirs = _get_locale_dirs()

    errors = []

    for name, dir_ in locale_dirs:

        if resources and not name in resources:

            po_path = '%(path)s/%(lang)s/LC_MESSAGES/django%(ext)s.po' % {

                'path': dir_, 'lang': lang, 'ext': 'js' if name.endswith('-js') else ''}

            call('msgcat -o %s %s' % (po_path, po_path), shell=True)

            mo_path = '%s.mo' % po_path[:-3]

            call('msgfmt -o %s %s' % (mo_path, po_path), shell=True)

            res = call('msgfmt -c -o %s.mo %s' % (po_path[:-3], po_path), shell=True)

            if res != 0:

                errors.append((name, lang))

    if errors:

        print("\nWARNING: Errors have occurred in following cases:")

        for resource, lang in errors:

            print("\tResource %s for language %s" % (resource, lang))

        exit(1)

if __name__ == "__main__":