Ftw.avatar

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- Fix error when portrait is stored as Pdata object.
[jone]

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- Fix user fullname lookup when user does not exist.
[jone]

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- Fix userid lookup when user does not exist.
[jone]

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- BugFix: Do not break if username (loginname) is passed as userid.
Like plone.app.discussion does until 2.3.2
[mathias.leimgruber]

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- Fix _imagingft check to support Pillow >= 2.1.0, where imports have changed.
[jone]

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- Do not try to generate the image if _imagingft is not installed.
Log an error instead.
[Julian Infanger]