Nuplone

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- New translations: Italian (IT) and Icelandic (IS)

- Fixed issue with file browse button

- Setup accordian for prototype settings page.

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- Modify internal buildout to use the latets buildout and Pillow releases.

- Remove stray space in readonly-attribute for named file widgets. This caused
IE to treat all file widgets as read-only.

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- Changed 2 strings in the Greek translation [pyailor]

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- Enable 'depends' form directive also for schema extended fields.
[jcbrand]

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- Added translation to Hungarian
[pysailor]

- Textual corrections for Lithuanian
[pysailor]

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- Add standard makefile to manage builds and cleanup buildout configuration.

- Fix editing of fields using object widgets: their data was not correctly
extracted due to a missing hidden form field.