Collective-blueline

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- Do not fail while adding a portlet under Plone 5 (closes `10`_, HT ale-rt).
[hvelarde]

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- Remove dependency on five.grok.
[rodfersou]

- Add Brazilian Portuguese and Spanish translations.
[hvelarde]

- Add Blueline portlet.
[rodfersou, cleberjsantos, hvelarde]

- Add code validation for control panel configlet fields (closes `1`_).
[rodfersou]

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- Do not show viewlets in the context of Diazo control panel configlet.
[hvelarde]

- Set order for blueline.header viewlet on all skins.
[hvelarde]

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- Initial release.

.. _`1`: https://github.com/collective/collective.blueline/issues/1
.. _`10`: https://github.com/collective/collective.blueline/issues/10