fix: JWT kid/jku lessons (#1949)

* refactor: rewrite hints

Use active voice and fix grammar issues.

* fix: use Thymeleaf `th:action`

* fix: JWT kid/jku lessons

Split the JavaScript into two files they pointed to the same URL

The JWTs are now valid, they parse successfully.

The paths now include `/kid` and `/jku` to make sure the hints match accordingly in the UI. Otherwise `/delete` would pick up both hints from both assignments as the paths overlap.

Closes: #1715

* fix: update to latest pre-commit version

* fix: increase timeouts for server to start during integration tests

src/main/resources/lessons/lessontemplate/html/LessonTemplate.html

@@ -47,7 +47,7 @@
             <!-- modify the action to point to the intended endpoint and set other attributes as desired -->
             <form class="attack-form" accept-charset="UNKNOWN"
                   method="POST" name="form"
-                  action="lesson-template/sample-attack">
+                  th:action="@{/lesson-template/sample-attack}">
                 <table>
                     <tr>
                         <td>two random params</td>