Implement Invitation
Add mailgun to application
Configure mailgun
Remove temp files
Fix host error
Fix host error again
Fix host error again
Add protocol to env file
Modify config/app
Add host to link
Add Sidekiq
Use heroku ENV to set host
Change from address format
Remove mail viewer comment
Change config static asset setting
Add redis
Use Sidekiq to send mails from background jobs
Add Procfile
Add Redistogo
Set Redistogo ENV variables