productreview add small fix

winery/webapp/src/main/resources/templates/productreview/add.html

@@ -10,7 +10,7 @@
 <div class="container px-4 px-lg-5">
     <main role="main" class="pb-3">
         <h1>Review - Add</h1>
-        <a class="btn btn-secondary" th:href="@{/productreview}">Back</a>
+        <a class="btn btn-secondary" href="javascript:history.go(-2)">Back</a>
 
         <div th:if="${model.success}">
             <div class="alert alert-success" role="alert">
@@ -19,8 +19,8 @@
         </div>
 
         <div th:if="${model.exists}">
-            <div class="alert alert-danger" role="alert">
-                You already created review for this product!
+            <div class="alert alert-warning" role="alert">
+                You've already created review for this product!
             </div>
         </div>