Added notification of new orders in Viber.

Added notification of new orders in Viber. Hotlist.biz Bot-channel. Keys are available for both the store and the Form Designer. You can create a key in the "Settings" section, "Notifications". https://viber.com/hotlistbiz

Added a way to display varieties when viewing a list of products.
Tabs with descriptions in the product card have been replaced.
Added navigation by store categories to the "Slide Menu" Widget.