Plone.app.workflow

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Bug fixes:

- Fixed test failure for LookupError, having extra 'available items' (Zope 4)
[davisagli]

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Bug fixes:

- Use zope.interface decorator.
[gforcada]

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New:

- Add a direct link from a group name on Sharing ab to that group's
member list for users with sufficient permissions [PLIP 1310]
[datakurre]

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- Use safe_unicode for search in sharing.
Fixes https://github.com/plone/Products.CMFPlone/issues/930
[pbauer]

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- Remove DL's from portal message in templates.
[khink]

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- Show login-name even if it is the same as the user-id.
Fixes https://dev.plone.org/ticket/14259
[pbauer]