Acelle Email Marketing Web Application 4.0.26-p87

Fix: License wasn't working

* Added: list subscription notification
* Added: verify subscriber email
* Changed: require PHP 5.6.4 or higher
* Fixed: cannot update system SMTP settings in certain cases
* Fixed: automation not triggered for list subscription
* Fixed: redirect issue for subscription form
* Fixed: favicon not showing up correctly on IE
* Fixed: verify-email.org integration issue
* Fixed: wrong stats showing up in user dashboard
* Fixed: PayPal integration issue with JPY
* Fixed: alignment issue with email builder

* Added: upgrade to Laravel 5.4 (support PHP >=5.6)
* Added: blacklist recorded for failed subscription
* Added: switch to MySQL utf8mb4
* Added: better 404 handling
* Added: re-send confirmation email
* Added: CronJob notification
* Added: support RTL email editor
* Fixed: contacts' status not translated in export
* Fixed: security for template webroot
* Fixed: error with GeoIP tracking
* Fixed: XSS vulnerability
* Fixed: better MySQL UIID
* Fixed: invalid PHP CLI detected
* Fixed: create mail list API
* Fixed: automation performance