Improved configuration from ENV, cleaned up timeline filter methods

to be more readable, add extra logging to process feed service

config/initializers/sidekiq.rb

@@ -1,5 +1,5 @@
-host = ENV['REDIS_HOST'] || 'localhost'
-port = ENV['REDIS_PORT'] || 6379
+host = ENV.fetch('REDIS_HOST') { 'localhost' }
+port = ENV.fetch('REDIS_PORT') { 6379 }
 
 Sidekiq.configure_server do |config|
   config.redis = { host: host, port: port }