Neamar/gmail — pull request #1 by orian (2014-05-28 00:52:26+00:00)
Title: Add support for special Gmail folders (i18n)

Gmail has 7 special mailboxes. I added a support for them independent from UI language:
https://developers.google.com/gmail/imap_extensions#special-use_extension_of_the_list_command

Without it, the special mailboxes don't work in non English languages, e.g. Gmail.all_mail method doesn't work for Polish ;-)