introduce the sidekiq job and remove delayed_job_active_record gem
clear delayed_jobs table
remove delayed_job executable file
config file for sidekiq
introduce sinatra for sidekiq
mount sidekiq web engine
Merge pull request #3 from 'Martin_288-use-sidekiq'
sinatra for both envs
Merge pull request #4 from 'Martin_288-use-sidekiq'
remove delayed_job related deploy script
integrate sidekiq deploy with capistrano
Merge pull request #5 from 'Martin_288-use-sidekiq'
extract smtp configs to a initializer to avoid error when run rake