Eea.relations

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* Change: cache forward and backward relations on relations macro
since they are called also by the auto relations
[ichimdav refs 21173]

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* Bug fix: Fixed tests
[avoinea]

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* Change: Refactoring to speedup "broken relations algorithm" within Control Panel
[voineali refs 21182]
* Change: Relations viewlet through Forward relations now searches for valid
relationship with an extra check when checking the interfaces before ignoring
the added relationship
[ichimdav refs 20045]
* Feature: queryContentType can now search in a reverse fashion for the
interface match. See categorizations.txt functional test for details
[ichimdav refs 20045]
* Upgrade step: Within "Plone > Site setup > Add-ons" click on
upgrade button available for eea.relations
[voineali refs 21182]
* Feature: Replace graphviz graph.png within Site Setup > Possibile relations
with a more scalable visualisation solution based on Dracula JS Graph Library
(see: http://www.graphdracula.net)
[voineali refs 21182]

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* Bug fix: Include i18n translations
[avoinea]

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* Bug fix: forward and background relations now return only one datatype
instead of lists or dicts if the field isn't found
[ichimdav refs 20045]

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* Feature: increase the width of the Edit button
[mironovi refs 9037]