Poi-receivemail

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- Prevent issues from being automatically renamed after they are
edited.
[maurits]

- Prevent some more lower-case email address comparison problems.
[maurits]

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- Make e-mail from address lower-case to prevent search problems with ldap
users. [jladage]

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- When searching PAS for a user by email address, strip off any white
space (like possibly '\r\n' in ldap) from the returned addresses, to
avoid non-matching for silly reasons.
[maurits]

- Moved all options to a new config.py file.
[maurits]

- Add option ADVANCED_SUBJECT_MATCH. Default is False: we only check
for '123' in the Subject line, to avoid matching overly generic
Subject lines like 'Hi' or 'Problem'. To get back the previous
behavior, set this to True (in a patch in your own code, likely).
[maurits]

- If the subject is empty, do not try to find a matching issue, as all
issues will match.
[maurits]

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- Added FAKE_MANAGER option (default is True) to determine if we
should fake a Manager role to be sure that a post succeeds.
[maurits]

- While switching users: if 'email' is not in the properties (say:
ldap), we can get far too many results; so we do a double check.
[maurits]

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- Ignore mails with the email_from_address as From address, as this
too easily means that a message sent by Poi ends up being added as a
reply on an issue that we have just created.
[maurits]

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- Handle encoded subject lines better.
[maurits]