Fixed admin panel user registration.

Now including start.sh to start a php server using the router.php so no webserver is needed.

application/model/LoginModel.php

@@ -379,15 +379,4 @@ class LoginModel
     {
         return Session::userIsLoggedIn();
     }
-
-    /**
-     * Check if the logged-in user is an admin
-     *
-     * @return bool True if the user is an admin, false otherwise
-     */
-    public static function isAdmin()
-    {
-        $user_role = Session::get('user_role'); // Assuming user role is stored in session
-        return $user_role === 'admin';
-    }
 }