ThemeIsle - Hestia Pro 3.1.1

- [Fix] Missing Font Awesome icons
- [Fix] Fatal error when using Yoast
- [Fix] Secondary color missing in the blocks color palette
- [Fix][Pro] Second button link in the Big title section
- [Fix][Pro] Check if attachment exists when swap images are used on the Shop page
- [Fix][Pro] Seamless add to cart mechanism

**Changes:**
* [Fix] Logo positioning for the third navigation layout option and no widgets
* [Fix] Sync between the image set as the featured image for the Frontpage and the image from the About section
* [Fix] Customizer icons missing when Font Awesome was not loaded
* [Fix] Compatibility with the Menu Icons plugin while the transparent menu is on

**Changes:**
* [Fix] Improved About page layout