Quintagroup.plonecomments

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- Added uninstall configlet and skins

- Converted a i18n layout to a locales layout

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- Fixed to use the username as the comment creator. That's necessary whenever
the user is authenticated. This fixes the problems where commenters weren't
receiving any notifications.
[deo]

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- Fixed bug in registration of product also as a package. [liebster]

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- Added pt-br translation.
[erico_andrei]

- Converted ``Extension/Install.py into a complete GenericSetup profile.
[deo]

- Added note about the ``browser.layer`` dependency for Plone 3.0.x.
[deo]

- Updated tests to run with Plone 3.x.
[deo]

- General code cleanup and modernization.
[deo]

- Synchronized the discussion templates to match Plone 3.x versions.
[deo]