added access variable to exams soo we can distinguish private, public and confidential exams and also bugfixes and improvements

src/pages/assignments/creator/[id].tsx

@@ -33,7 +33,6 @@ import moment from "moment";
 import Head from "next/head";
 import Link from "next/link";
 import { useRouter } from "next/router";
-import { generate } from "random-words";
 import { useEffect, useMemo, useState } from "react";
 import ReactDatePicker from "react-datepicker";
 import {