Plone.app.locales

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- Complete spanish translation.
[erral]

- Complete basque translation.
[erral]

- Include plone.app.caching translations.
[erral]

- Include plone.app.multilingual translations.
[erral]

- Update Brazilian Portuguese translations.
[hvelarde, agnogueira, lyralemos]

- Update Italian translations.
[ale-rt, cekk]

- Update German translations.
[jensens, agitator]

- Update Traditional Chinese translations.
[l34marr]

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- Got back the 8 messages for the constrain types menu from the 4.3.x branch.
[vincentfretin]

- Complete widgets translation in Spanish.
[erral]

- Complete Basque translation for widgets.
[erral]

- Update Traditional Chinese translations.
[l34marr]

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- Complete Spanish translation.
[erral]

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- Put back missing translation of password reset mails.
[allusa, vincentfretin]

- Update Traditional Chinese translations.
[l34marr]

- Update German translations.
[jaroel]

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- German fixes and updates
[staeff]
- Basque fixes
[erral]
- remove mention of "retina" (https://github.com/plone/Products.CMFPlone/issues/2123)
[tkimnguyen]
- Basque translation
[erral]
- Add some German translations for the related items widget
[cillianderoiste]
- Add German translations for plone.protect dialogs.
[pgrunewald]
- Update Traditional Chinese translations.
[l34marr]
- Complete basque (eu) translation
[erral]

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- Add UK English translation
[MatthewWilkes]
- Update German translations
[ksuess]