Fix so imap folder attribute comparisons are case-insensitive (#1490466) + ...

Aleksander Machniak

2015-07-29 19a61851ae7bc9492504c4884db8a53afa5d06c5

 program/include/rcmail.php

@@ -1584,7 +1584,7 @@
            // skip folders in which it isn't possible to create subfolders
            if (!empty($opts['skip_noinferiors'])) {
                $attrs = $this->storage->folder_attributes($folder['id']);
                if ($attrs && in_array('\\Noinferiors', $attrs)) {
                if ($attrs && in_array_nocase('\\Noinferiors', $attrs)) {
                    continue;
                }
            }