Raptus-article-teaser

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* moved plone 4.1 compatibility fix into raptus.article.core to have it applied to
the whole raptus.article suit
* plone 4.1 compatibility by importing cmfcore permissions [fRiSi]

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* add blob storage migration blob-article-teaser-migration

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* Fixed French translations

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* Added French translations

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* Set zip_safe flag to False

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* Updated readme and manual