Ftw.workspace

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- Added date column
[mathias.leimgruber]

- Permission check for assignable_users
[mathias.leimgruber]

- Added TabbedViewFolder for portal_factory
[mathias.leimgruber]

- Set depth in catalog query to -1 (means everything).
[mathias.leimgruber]

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- Removed checkboxes in documents and events listing.
[mathias.leimgruber]

- Implement membersonly param. for assignable_users vocab.
[mathias.leimgruber]

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- Removed dependency to ftw.calendarwidget, it seems not to be needed
[jbaumann]

- New ftw.table implemented
[mathias.leimgruber]

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- fix icon helper function (url generation)
[mathias.leimgruber]

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- Initial release