Add vote statistics feature and improve vote page functionality

frontend/src/app/services/auth.service.ts

@@ -68,7 +68,7 @@ export class AuthService {
   /**
    * Check if the user is authenticated
    */
-  public checkAuthStatus(): boolean {
+  private checkAuthStatus(): boolean {
     const jwt = this.getJwt();
     if (!jwt) {
       console.log("No JWT found");