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

Aleksander Machniak

2015-07-29 9d78c68cbf5ce86f02e8fa16814293cdfd204432

 program/include/rcmail.php

@@ -1586,7 +1586,7 @@
            // 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;
                }
            }