Eea.relations

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* Upgrade step: Within "Plone > Site setup > Add-ons" click on
upgrade button available for eea.relations
[ichim-david 13870]
* Bug fix: fixed issue when the relations div from the relations macro appeared
wrongly when the auto relations returned an empty list
[ichim-david 13870]
* Feature: added javascript logic that makes use of the reordering controls
[ichim-david 13870]
* Feature: added controls for reordering of related content
[tiberich 13870]

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* Bug fix: fixed generation of tabs call when IAutoRelations queryAdapter
returns no result
[ichimdav]
* Feature: added information for contributors
[ciobabog refs 13892]

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* Bug fix: avoid crash for backwards and forward relations when relation is
None
[ichimdav 13988]
* Bug fix: sort items in related items macro based on title
[tiberich 13870]

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* Bug fix: optimize Macro forward and backwards methods calls for similar
performance gains like those done in 5.5
[ichimdav 13771]
* Bug fix: Corrected missing i18n attributes for translations.
[prospchr refs 13827]
* Bug fix: Added domain=eea.notranslation to views that don't need
translations.
[prospchr refs 13827]

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* Change: optimized relatedItems macro tal definitions and reference listing
url in a way that can work without our own extra packages
[ichimdav 13677]

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* Feature: added related content header to relatedItemsWithThumbs macro
[ichimdav 13639]