Setup solid queue for job processing (#19)

Reviewed-on: #19

config/environments/development.rb

@@ -50,6 +50,8 @@ Rails.application.configure do
   # Highlight code that triggered database queries in logs.
   config.active_record.verbose_query_logs = true
 
+  # Use a real queuing backend for Active Job (and separate queues per environment).
+  config.active_job.queue_adapter = :solid_queue
   # Highlight code that enqueued background job in logs.
   config.active_job.verbose_enqueue_logs = true