Plone.app.contentmenu

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- add prefix to id tag for display menu dropdown items, fixes 11927 and 10894
[maartenkling]

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- Use zope.browsermenu and remove Zope 2.12 BBB code.
[hannosch]

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- Restore the workflow menu on the folder contents page as it is the
only way to change the state of the folder when it has a default
page. Improves the fix to http://dev.plone.org/plone/ticket/8908.
[rossp]

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- Set height/width of contentmenu icons through browser menu code.
[thomasdesvenain]

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- We need permission to see Placeful policy in workflow menu.
[thomasdesvenain]

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- Depend on ``Products.CMFPlone`` instead of ``Plone``.
[elro]

- Add test coverage for factory expression context when a front-page object is
used for a folder. Fix in plone.app.content.
[rossp]

- Fix the addContext in the FactoriesSubMenuItem to make it possible to add
content to a folderish object that set as the default view on its parent folder.
This closes http://dev.plone.org/plone/ticket/10953.
[WouterVH]