* Tweak: Fixed some windows outlook app layout issues
* Tweak: Added control for outlook background support (partial)
* Tweak: Added image alt, title for images
* New: Added custom css class option for section & widgets
* Fix: Flicker in template library when refreshed
* Fix: Flicker in save template system
* Fix: Template library filter not working free/pro
* Fix: Avoid fatal error if remote template library not found
* Fix: Not more than 5 template working in WC email template condition
* Fix: Delete template not working & causing fatal error
