Ftw.contacts

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- Fix synchronisation of images. [mbaechtold]

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- Support additional DX behaviors during synchronisation. [mbaechtold]

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- Fix contact sync for umlaut id's and group objects. [lknoepfel]

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- Expand contact synchronization to handle multiple ldap sources. [lknoepfel]

- Move configuration of addable types of Plone Site to the simplelayout profile. [raphael-s]

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- Add comma between address and city in contact template. [raphael-s]

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- Fix contacts summary view. [Kevin Bieri]