Added testing for sending messages via Viber and Telegram

BooStore adds testing for sending messages via Viber and Telegram

Now you can test sending notifications via Viber and Telegram directly from the control panel.
Additionally, it is now possible to remove subscribers without changing the access key.

Added testing for sending messages via Viber and Telegram

Added the ability to quickly insert a list of product varieties.Added «Live Editing» «Blocks/Menus» in the pop-up window.Added informing the client about the availability of goods specified in the order with the status "Canceled - out of stock".