Improve Client Cancelling and Rescheduling function#1061

It should be possible for clients to Cancel or Reschedule at the click of a seamless button, without the client having to log in. In each confirmaion email there should be a button for Cancel and Rechedule

This featire exists - %customer_panel_url% placeholder

Needs to be that simple - with every booking, and / or confirmation, buttons to make it easy to cancel and/or reschedule - anything else is a “p***-you-off” for the client and the employee manually doing it - very important in the light of wht competitors are doing, and in my opinion would be a Gamechanger