Added new permission system

src/pages/index.tsx

@@ -8,7 +8,6 @@ import {useEffect, useState} from "react";
 import useStats from "@/hooks/useStats";
 import {averageScore, groupBySession, totalExams} from "@/utils/stats";
 import useUser from "@/hooks/useUser";
-import Sidebar from "@/components/Sidebar";
 import Diagnostic from "@/components/Diagnostic";
 import {ToastContainer} from "react-toastify";
 import {capitalize} from "lodash";