new syncronization for quizzes, add only

Management.Web/Shared/Components/AssignmentForm/AssignmentDescriptionEditor.razor

@@ -188,7 +188,7 @@
     </div>
   </div>
     <div class="row">
-      <div class="col">
+      <div class="col-6">
         <textarea 
           id="description" 
           class="form-control h-100" 
@@ -197,7 +197,7 @@
           @oninput="handleNewDescription"
         />
       </div>
-      <div class="col" @key="descriptionForPreview">
+      <div class="col-6" @key="descriptionForPreview">
         @(preview)
       </div>
     </div>

Management.Web/Shared/Components/Quiz/QuizForm.razor

@@ -102,6 +102,11 @@
       quizContext.SaveQuiz(newQuiz);
     }
   }
+
+  private async Task addToCanvas()
+  {
+    await quizContext.AddQuizToCanvas();
+  }
 }
 
 <Modal @ref="modal" OnHide="() => quizContext.Quiz = null" >
@@ -166,6 +171,13 @@
   <Footer>
     <ConfirmationModal Label="Delete" Class="btn btn-danger" OnConfirm="deleteQuiz" />
 
+
+    <button 
+      class="btn btn-outline-secondary"
+      @onclick="addToCanvas"
+    >
+      Add to Canvas
+    </button>
     <button 
       class="btn btn-primary" 
       @onclick="() => modal?.Hide()"