Ftw.dashboard.dragndrop

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- Add dashboard-columns-X class, indicating the amount of used columns.
This helps styling the columns.
Styled for 3-columns.
[jone]

- Update French translations.
[ttschanz]

- Added attributes cols and rows to textarea (W3C).
[Julian Infanger]

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- Fix generated HTML structure on not directly editable dashboards.
[mathias.leimgruber]

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- Code cleanup (pylint/pep8).
[mathias.leimgruber]

- Update test buildout configuration.
[mathias.leimgruber]

- Describe all ftw.dashboard properties.
[mathias.leimgruber]

- Use portlet adder method from dashboard.pt
also on manage-dashboard.pt
[mathias.leimgruber]

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- Fix js condition if dashboard editable is enabled.
[mathias.leimgruber]

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- Dont show errormessage if feed is available.
[Julian Infanger]

- Support for portlet adder views, starting with ''.
[jone]

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- Override plone default rss portletrenderer. Show up a message
if feed is not parsable or the feed url itself cannot be found.
[mathias.leimgruber]