Z3c.formui

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- Feature: Registered all defined macros for each form template. Also, added
more slots to the templates providing more hooks for customization.

- Feature: Added a macro/slot for the "required info", which explains how
required fields are marked.

- Feature: Added support for form labels.

- Feature: Added support for groups to templates.

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- Bug: Make sure we use the id for the "for" attribute of the "label"
element and not the name. This has worked until recently, because the
name and id were the same, but they are different now.

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- Initial Release