added login check to the pages which add entries to the tables

app/public/login.php

@@ -13,6 +13,7 @@
                 $phash = generate_password_hash($password, $user_data['salt']);
                 if($user_data['password'] === $phash) {
                     $_SESSION['user_id'] = $user_data['user_id'];
+                    $_SESSION['user_group'] = $user_data['user_group'];
                     header("Location: index.php");
                     die;
                 } else {