Add logout functionality and add back navigate functionality for createQuestion

Author: qiaoen17

Frontend/src/components/NavigationBar.jsx

@@ -1,11 +1,23 @@
 import Container from 'react-bootstrap/Container';
 import Navbar from 'react-bootstrap/Navbar';
+import Button from 'react-bootstrap/esm/Button';
+import { useNavigate } from 'react-router-dom';
 
 function NavigationBar() {
+    const navigate = useNavigate();
+
+    // Add log out functionality 
+    const handleLogout = () => {
+        navigate("/login");
+    }
+
     return (
         <Navbar className='bg-light' sticky="top">
             <Container>
                 <Navbar.Brand>PeerPrep</Navbar.Brand>
+                <Button className="ms-auto" variant="danger" onClick={handleLogout}>
+                    Logout
+                </Button>
             </Container>
         </Navbar>
     );

Frontend/src/components/question/CreateQn.jsx

@@ -21,6 +21,7 @@ function CreateQn({handleClose, addQuestion}) {
         console.log(result.data)
         addQuestion(result.data)
         handleClose()
+        navigate("/home")
       } 
     )
     .catch(e => {