Zope.app.zcmlfiles

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- Use new ``zope.app.locales`` which has its own `configure.zcml`.

- No longer using ``zope.testing.doctestunit`` as it is deprecated
now. Using python's ``doctest`` module.

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- Removed reference to no longer existing configure.zcml from
``zope.app.pagetemplate.tests``.

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- No longer depends on deprecated ``zope.app.interface`` but on
``zope.componentvocabulary``.

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- Added missing dependencies, including ``zope.app.http`` and
``zope.app.applicationcontrol``.

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- Added missing ``zope.app.exception`` dependency, as we include its ZCML.

- Added missing ``zope.app.testing`` test dependency to make tests pass.

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- Added ``zope.app.broken`` dependency (we include its ZCML).