Bug 6503 - Change wording from mailbox to folder when referring to the...

Bug 6503 - Change wording from mailbox to folder when referring to the subfolders of a mailbox (less confusing)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@10353 65c4cc65-6c06-0410-ace0-fbb531ad65f3