Merge branch 'release/v17'

* release/v17:
  Wrong column was deleted
  Abbility to view raw email data and email body without bootstrap styles added
Merge branch 'release/v18'

* release/v18:
  Link order fixed
Production config.
Production configuration
Production logger config.
Production restart task.
test sekret keys.
Last minute mails count.
change staging settings
change deploy settings
change database settings
change staging database name
add staging environment config
update rails to 3.2.14
change staging github secret keys
git ignore coverage
modified .gitignore
added ransack
fixed mail_applications controller
added select2 input