Collective-favorites

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- Nothing changed yet.

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- Update French translation.
[jazwsophie]

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- Fixed: all favorites were deleted when a user delete his last favorite.
[cedricmessiant]

- add_favorite returns True if a new favorite has been added.
[cedricmessiant]

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- Use 'item' instead of 'document' or 'folder' in messages.
[cedricmessiant]

- Added russian and ukrainian translation
[bogdangi]

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- Added dutch translation
[ralphjacobs]

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- i18n portlet name and description.
[thomasdesvenain]

- Plone 4.3 JQuery compatibility.
[thomasdesvenain]

- Added views for ajax behaviour.
[thomasdesvenain]