language updates, optimization of Help HTML

.tx/config

apps/user_openid/templates/settings.php

core/css/styles.css

core/l10n/el.php

core/l10n/nl.php

files/l10n/nl.php

l10n/bg_BG/settings.po

l10n/ca/settings.po

l10n/da/settings.po

l10n/de/settings.po

l10n/el/core.po

l10n/el/settings.po

l10n/es/settings.po

l10n/fr/settings.po

l10n/id/settings.po

l10n/it/settings.po

l10n/nl/core.po

l10n/nl/files.po

l10n/nl/settings.po

l10n/pl/files.po