Ftw.shop

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- Added unit to shop item.
[lknoepfel]

- Make variations a mapping when saving to the annotation storage.
[raphael-s]

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- Fix hidden uid inputs. They had type=text too.
[mathias.leimgruber]

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- Fix adjust styling for shopitem variation
[elioschmutz]

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- Fixed variation js bug.
[lknoepfel]

- Fixed bug in edit variations where variations didn't get activated.
[lknoepfel]

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- Use a separate permission (ftw.shop: Assign shopping cart portlet) for the write permission
of the shopping cart portlet.
[mathias.leimgruber]

- Consistently use resource directory instead of individually registered resources,
and make resource URLs always absolute and based on portal_url.
[erral]

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- Fix getting the uid in get_suppliers, if there are variations.
[mathias.leimgruber]

- Fill content-core slot instead of main slot in shopitem view. Fixes 10
[erral]

- Some more translation fixes.
[erral]