Add missing locale blocking the JS

[AyakorK]

🎩 What? Why?

This missing locale was blocking the loading of the text editor on the participatory processes

📌 Related Issues

• Related to 🐛 BUG Problème affichage éditeur de texte sur la plateforme en 0.29

How to test

• First of all you may add the french locale as an available locale !
• Create a development app
• Go through the config/decidim.rb in your development_app and change line 17 by config.available_locales = %w(en ca es fr)
• Execute bundle exec rails c (Warning if you're using Sprint you may have to execute DISABLE_SPRING=true bundle exec rails c
• Execute those lines in your rails console (follow the order otherwise it may not work)

org = Decidim::Organization.first
org.available_locales+=["fr"]
org.save!
exit

You're all set now so next step :

• Log as an admin
• Navigate through the Back Office
• Try to access processes and to create a new one or update an existing one
• Make sure you're on "french" locale
• Make sure that the editor is displayed correctly and that you can freely submit your new or edit your existing process.

📋 Subtasks

• Add missing locale (key was there but content was empty so it made the i18n.js create_dictionary function crash)

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