#42 Don't force email deleteing after import_emails()

[Daniel Lorenz]

Don't force email deleteing after import_emails(). I mean lines:

@imap_delete($mbox,'1:*'); // to clear out an entire mailbox.
@imap_expunge($mbox);

Give user config variable.

There're often doubts about attachments and theirs data quality and it's not easy to check the problem in Email object only.