Ftw.notification.base

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- Resolve members of nested groups.
[mathias.leimgruber]

- Add test setup.
[mathias.leimgruber]

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- Fix zope.component.hooks import for Plone 4.3 compatibility
[jone]

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- Do not show "Send notification" checkbox when product is not installed.
[jone]

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- Added preselect functionality.
[mathias.leimgruber]

- Sort users and groups on notification form alphabetically.
[mathias.leimgruber]

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- Show email instead of user_id on notification_form.
[tschanzt]

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- Changed HTML in notification form.
[Julian Infanger]

- Add checkbox in header to select all recipients.
[Julian Infanger]