Language\L10n method name fixes, update Smarty block.t.php

__pn for context plural has now correct name __np

Update smarty plugin block.t.php to use __* named gettext methods for
all calls, for __n/__np/__/__p calls we fallback to check internal set
class on l10n object variable.

This will be removed in future calls

www/admin/class_test.smarty.php

@@ -74,6 +74,7 @@ $smarty->setSmartyPaths();
 // smarty test
 $smarty->DATA['SMARTY_TEST'] = 'Test Data';
 $smarty->DATA['TRANSLATE_TEST'] = $l10n->__('Are we translated?');
+$smarty->DATA['TRANSLATE_TEST_FUNCTION'] = __gettext('Are we translated?');
 $smarty->DATA['TRANSLATE_TEST_SMARTY'] = $smarty->l10n->__('Are we translated?');
 $smarty->DATA['replace'] = 'Replaced';
 // variable variables