[StreamTube] Mobile Bottom Menu

The Mobile Bottom Menu has been available since StreamTube version 3.0.0 and only appears on mobile devices, regardless of the screen size.

Setting up the Mobile Bottom Menu is similar to the "Add Menu" https://phpface.ticksy.com/article/19787/

For instance

TIP: Read more about the WordPress Menus: WordPress Menu User Guide

Activating the "WP Menu Icons" plugin is essential to incorporate icons into menu items

The menu only allows for one level of dropdown