- added possibility to use transparent colors in the custom theme color customizer
- fixed displaying a lot of submenu items in the mobile menu
- replaced image arrow icons with font awesome icons in default megamenu theme
- improved design of tree type submenu for default and custom theme
- fixed themes list displaying full paths of themes folders on windows servers (usually localhosts)
- fixed hiding submenu in megamenu when its items are set to show only in mobile menu
- fixed size calculation of slideshow/galleries inside submenu