show booking date range on admin booking page

components/calendar.tsx

@@ -1,4 +1,4 @@
-import React, { useContext } from 'react'
+import React from 'react'
 import classnames from 'classnames'
 import {
   isPast,
@@ -94,6 +94,7 @@ export default function PlainCalendar({
     <div className={className}>
       <h2 className="text-xl">Belegungsplan</h2>
       <Calendar
+        activeStartDate={startDate}
         minDate={new Date()}
         // @ts-ignore
         onClickDay={(date: Date, event: React.MouseEvent<HTMLInputElement>) => {