Make the streaming API also handle websockets (because trying to get the browser EventSource interface to

work flawlessly was a nightmare). WARNING: This commit makes the web UI connect to the streaming API instead
of ActionCable like before. This means that if you are upgrading, you should set that up beforehand.

config/initializers/ostatus.rb

@@ -10,8 +10,10 @@ Rails.application.configure do
   config.x.use_s3       = ENV['S3_ENABLED'] == 'true'
 
   config.action_mailer.default_url_options = { host: host, protocol: https ? 'https://' : 'http://', trailing_slash: false }
+  config.x.streaming_api_base_url          = 'http://localhost:4000'
 
   if Rails.env.production?
     config.action_cable.allowed_request_origins = ["http#{https ? 's' : ''}://#{host}"]
+    config.x.streaming_api_base_url             = ENV.fetch('STREAMING_API_BASE_URL') { "http#{https ? 's' : ''}://#{host}" }
   end
 end