Revert "Default local to :ca"

This reverts commit 00532b0.

config/initializers/decidim.rb

@@ -19,7 +19,7 @@
   # Sets the default locale for new organizations. When creating a new
   # organization from the System area, system admins will be able to overwrite
   # this value for that specific organization.
-  config.default_locale = Rails.application.secrets.decidim[:default_locale].presence || :ca
+  config.default_locale = Rails.application.secrets.decidim[:default_locale].presence || :en
 
   # Restrict access to the system part with an authorized ip list.
   # You can use a single ip like ("1.2.3.4"), or an ip subnet like ("1.2.3.4/24")