Just a note here. The string should actually be:
$string['parentlanguage'] = 'pt.utf8';
Because the result is being retrieved by this line in htdocs/lib/mahara.php:
$result = get_string_local(get_language_root($parentlang) . 'lang/', $parentlang . '/' . $section . '.php', $identifier);
So, make sure there is '.utf8' attached.
Just a note here. The string should actually be:
$string[ 'parentlanguage '] = 'pt.utf8';
Because the result is being retrieved by this line in htdocs/ lib/mahara. php:
$result = get_string_ local(get_ language_ root($parentlan g) . 'lang/', $parentlang . '/' . $section . '.php', $identifier);
So, make sure there is '.utf8' attached.