Products.cmfdifftool

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- Move CMF skin layer registration to zcml.
[wichert]

- Move GenericSetup step registration to zcml.
[wichert]

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- Switch to egg-based releases.
[hannosch]

- Added GS import step registration to the product. It was only registered
as part of the CMFPlone base profile.
[hannosch]

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- Added protection against missing diff_tool in the exportimport handler.
[hannosch]

- Added metadata.xml file to the profile.
[hannosch]

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- Don't assume there's a portal_type for objects.
Fixes http://dev.plone.org/plone/ticket/7295
[alecm]

- Fixed issue causing diffs to break for folders that switched between
inside and outside ref modifiers.
[alecm]

- Make ChangeSet compatible with CMF trunk.
[wiggy]

- Updated componentregisty.xml to new style.
[hannosch]

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- Fixed i18n markup in at_changeset.pt.
[hannosch]

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- Removed default config for ATCT types, it goes in Plone now
[alecm]