more i18n improvements

l10n/da/admin.po

l10n/da/core.po

l10n/da/help.po

l10n/da/log.po

l10n/da/settings.po

l10n/de/admin.po

l10n/de/core.po

l10n/de/help.po

l10n/de/log.po

l10n/de/settings.po

l10n/l10n.pl

l10n/nl/admin.po

l10n/nl/core.po

l10n/nl/help.po

l10n/nl/log.po

l10n/nl/settings.po

l10n/templates/admin.pot

l10n/templates/core.pot

l10n/templates/help.pot

l10n/templates/log.pot