Fix URL configuration when S3 is enabled

app/helpers/routing_helper.rb

@@ -10,6 +10,6 @@ module RoutingHelper
   end
 
   def full_asset_url(source)
-    File.join(root_url, ActionController::Base.helpers.asset_url(source))
+    Rails.configuration.x.use_s3 ? source : File.join(root_url, ActionController::Base.helpers.asset_url(source))
   end
 end

config/initializers/ostatus.rb

@@ -2,6 +2,7 @@ Rails.application.configure do
   config.x.local_domain = ENV['LOCAL_DOMAIN'] || "localhost:#{ENV['PORT'] || 3000}"
   config.x.hub_url      = ENV['HUB_URL']      || 'https://pubsubhubbub.superfeedr.com'
   config.x.use_https    = ENV['LOCAL_HTTPS'] == 'true'
+  config.x.use_s3       = ENV['S3_ENABLED'] == 'true'
 
   config.action_mailer.default_url_options = { host: config.x.local_domain, protocol: config.x.use_https ? 'https://' : 'http://', trailing_slash: false }