Seantis-dir-contacts

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- Upgrade to seantis.dir.base 1.6

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- Fixes town not showing in item view

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- Fixes typo in item view

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- Streamlines contacts information in item view
- Don't show contacts the user has no permission to
- Adds a link to the contact object for managers

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- Include origin merges (replaces 1.5.1)

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- Fixes zipcode / city not showing