Five-pt

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- If template is not an acquirer, wrap it implicitly. [malthe]

- Removed unused ``ViewletManager`` ZCML handler. [malthe]

~~~~~~~~~~~~~~~~~

- Improve five.grok support [fretin]

- Check if templates are acquisition-aware before trying to wrap them. This
fixes problems with METAL macros in some ZMI pages. [wichert]

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- Basic support for five.grok templates. [wichert]

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- Fixed some calling convention oddity that would result in the view
instance being passed doubly as the template arguments.

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- Default encoding of the base template set to UTF-8. [malthe]

- Update to latest Chameleon. [malthe]

- Patch ``macros`` attribute. [malthe]

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- Avoid another case of unconditionally attempting to Acquisition wrap
template files. We do have an interface check for this. [hannosch]