Plone-app-z3cform

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Incompatibilities:

- Deprecated "plone.app.z3cform.object" and moved to
"plone.app.z3cform.objectsubform" in order to avoid built in names
as module names, which may result in difficult to debug errors.
[jensens]

- Made existing soft deprecation (by comment) of plone.app.z3cform.layout
explicit by deprecating using zope.deferredimport.
[jensens]

- removed plone.app.z3cform.queryselect since this was deprecated already
and removal planned (!) already for Plone 4.1
[jensens]

New:

- make widget available to wysiwyg_support template
[gotcha]

Fixes:

- Reduce dependency on plone.app.widgets in tests.
[thet]

- Enhance test in order to show problem in RelatedItemsWidget with
navigation-roots
[jensens]

- Cleanup: pep8, uth8-headers, zca-decorators, ...
[jensens]

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New:

- Add metal slot for inserting stuff below fields
[fredvd]

Fixes:

- Fix ajax selection for add forms
[tomgross]

- Use doctest instead of zope.testing.doctest
[pbauer]

- Fix related items widget tests to include root path support.
Fix options merging for TinyMCE widget.
[alecm]

- Fixed test for plone.app.widgets.
[Gagaro]

- Used assertDictEqual instead of assertEqual for RelatedItemsWidgetTests.test_widget
[Gagaro]

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Fixes:

- Fixed tests for newer CMFPlone. [Gagaro, ebrehault, vangheem]

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Fixes:

- Don't allow adding new terms in the AjaxAutocompleteWidget
when it's used with a Choice field.
[davisagli]

- Remove installation of plone.app.widgets default profile. In Plone 5 with
plone.app.widgets >= 2.0, the profile is only a dummy profile for BBB
compatibility.
[thet]

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Fixes:

- Check if user can add keywords for AjaxSelectWidget.
[Gagaro]

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- Don't check portal_registry for default_charset, we only accept
utf-8.
[esteele]

- Allow time options to be customized for DatetimeWidget.
[thet]

- Wrap context to allow tools to be found in text widget.
[cguardia]