Fixed i18n.fallbacks warning msg

Author: jasnow

config/environments/production.rb

@@ -70,7 +70,7 @@
 
   # Enable locale fallbacks for I18n (makes lookups for any locale fall back to
   # the I18n.default_locale when a translation can not be found).
-  config.i18n.fallbacks = true
+  config.i18n.fallbacks = [I18n.default_locale]
 
   # Send deprecation notices to registered listeners.
   config.active_support.deprecation = :notify