Collective-folderishtypes

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- Plone 5 + 4 safe call of the ``folder_listing`` ``listing_macro``.
[thet]

- Provide a ``redirectparent.zcml`` file. When loading it the user is
redirected to the parent folder after adding or editing. This avoids
confusing behavior of creating nested content structures, while one might add
multiple content items to one folder. For consistency reasons, this is done
for all types.
For Archetypes, this behavior is enabled by default.
[thet]

- Add a browserlayer for collective.folderishtypes including the .at and .dx
sub packages together with upgrade steps. Bind relevant browser views to
these browser layers.
[thet]

- Allow "Site Administrator" to add ATContentTypes based Folderish Content
Types.
[thet]

- Better PloneArticle migration: Set content_type and filename for files and
images. Plus: migrate contentleadimage, if available.
[thet]

- Update unsintall profiles.
[thet]

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- Fix broken release
[rnix]

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- Add ISelectableConstrainTypes to behaviors of Dexterity folderish types.
[agitator]

- Add content listing viewlet.
[agitator]

- Add migration step for Products.PloneArticle objects to Archetypes based
foldersh document objects.
[thet]

- Initialize permissions and roles for Archetypes foldersh types.
[thet]

- Dexterity support.
[thet]

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- In folder_summary_view do a more sane check, if an image is available.
[thet]

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- Remove bobo_traverse in Foldersh News Item, since plone.app.imaging does the
traversing.
[thet]

- Remove vCalendar action entry from FTI config of Folderish Event.
[thet]

- More documentation: How To create own content types based on
collective.folderishtypes, How to migrate non-folderishtypes to folderish
ones.
[thet]

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- Update translations and translate folder_listing.
[thet]

- Add z3c.autoinclude.plugin entry point.
[thet]