change default locales to en it bg and el (#5)

* change default locales to en it bg and el, to update on production db organization later

* Default locales to env variable instead of hard coded

config/initializers/decidim.rb

@@ -14,7 +14,7 @@
   # of languages will be equal or a subset of the list in this file.
   # config.available_locales = Rails.application.secrets.decidim[:available_locales].presence || [:en]
   # Or block set it up manually and prevent ENV manipulation:
-  config.available_locales = %w(en ca es)
+  config.available_locales = Rails.application.secrets.decidim[:available_locales].presence || [:en]
 
   # Sets the default locale for new organizations. When creating a new
   # organization from the System area, system admins will be able to overwrite