Convert Pro 1.7.8

- New: MX validation for Email form field.
- Fix: YITH WooCommerce Membership Premium plugin JS conflict with Convert Pro editor.

- Improvement: Slide-in CTA - Added new Top Left, Top Right, Top Center positions.
- Fix: Editor errors due to unwanted files present in the plugin's folder.
- Fix: Warning showing when Custom Adobe Font plugin is active.
- Fix: Unwanted White bar displaying for the popups.
- Fix: Warning showing when Google font selected from Global font settings.

- Improvement: Change method of loading Google Fonts from JSON to PHP Array.
- Improvement: Added option to Disable Sticky Info-bar CTA.