Cioppino-twothumbs

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- allow anonyoums voting if configured (registry.xml) protected by weak
cookie [jensens]
- fix duplicated ID for accessibility [simahawk]
- fix rendering under plone 4.3 [simahawk]
- feat: add event and triggers for content rules [Gagaro]
- qa: add travis and coverage support [toutp]
- qa: pep8 fixes [toutp,Gagaro,jensens]

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- Add french translation [toutpt]
- Make the template being 'index' to be customizable with zcml + browser layer
[toutpt]
- Add catalan translation [mpampols]

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- Fix requirements for instances where dexterity is not installed [tschorr]

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- Add support for dexterity behaviors [eleddy]
- Fix confirmation message alignment for default plone sites [eleddy]

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- German translation added. [jensens]
- Added Brazilian Portuguese translation. [agnogueira]
- Add support for Plone 3 [rochecompaan]
- Enable use of the twotumbs widget outside the content div [rochecompaan]

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- Turn thumbs background images into a sprite [marcosfromero]
- Improve accessibility: non AJAX/JavaScript support [marcosfromero]
- Improve i18n and added new Spanish translations [marcosfromero]
- Improve feedback for anonymous users and after voting [marcosfromero]