Plone.app.iterate

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New:

- plone.app.iterate depends on GenericSetup >= 1.8.2
for using a post_handler on registerProfile
[iham]

- Added naming of default GenericSetup profile as "default".
"plone.app.iterate" also exists to keep compatibility.
[iham]

- Added deprecation warning to GS profile "plone.app.iterate"
[iham]

Fixes:

- No need to register as Zope2 Product anymore.
[iham]

- Some minor pep8 cleanup.
[iham]

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Fixes:

- Keep the default page setting when checking in a document.
[maurits]

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- Fix metadata storage for dexterity checkouts
[vangheem]

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- Fixed test to pass with recent plone.app.content change
that requires the cmf.ModifyPortalContent permission for the
content_status_history page.
[maurits]

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- Check if object does not have iterate policy. This fixes
iterate causing toolbar errors on portal root.
[vangheem]

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- Merge plone.app.stagingbehavior into plone.app.iterate without the
behavior implementation. This is for Plone 5 iterate support.
[vangheem]

- Don't remove acquisition on object for getToolByName call.
[tomgross]