Revert "Added public precompiled assets for Heroku production deployment"

This reverts commit 09ea697a96fd6bc2d6fa47fdd739cea396b48e51.
Revert "Tweaked port to 25 and domain to heroku app domain name on production email configuration"

This reverts commit 3b86d61639e92c2d61c7a0cd426afc0006cfae9b.
Revert "Troubleshooting smtp settings for mailer"

This reverts commit dc7a0daa709db3b99d0a58accbe6e8169f50220e.
Revert "Tweaked port for incoming mail"

This reverts commit 8dcf31808018d4ea8cbbc3280cfff36161e62471.