Completed client side time adjustment handling

Corrected error display bug
Removed redundant auth and models in quiz client app

ref-test/quiz/templates/quiz/start-quiz.html

@@ -36,7 +36,7 @@
                     <div class="col text-center">
                         <button class="btn btn-md btn-success btn-block" type="submit">
                             <i class="bi bi-pencil-fill button-icon"></i>
-                            Start Exam
+                            Get Ready
                         </button>
                     </div>
                 </div>