Ftw-billboard

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- Fix add image translation and use overlay for adding a file.
[mathias.leimgruber]

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- Fix typo and use image_large as image size in overlay.
[mathias.leimgruber]

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- The default expiration date can be defined in registry.
[Julian Infanger]

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- Use a list instead of a table to display billboardcategory-listing.
[Julian Infanger]

- Added default class to table in billboardcategory view.
[Julian Infanger]

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- fix manifest.in

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- add assignments for action-portlet
[eschmutz]