added basic edit save account

- changes to AccountController
  - added postEditAccount
  - change postCreateAccount to use lambda
- added success message to edit.html
- added lambda to deal with password to toAccountRequest in Mapping.kt
- added updateAccount to AccountRegistryService
- added accountRegistryUpdate to WebClientCalls.kt
- added NoChangeException
- added NotFoundException

src/main/resources/templates/account/edit.html

@@ -13,6 +13,9 @@
     <div th:if="${errorMessage != null}" style="color: red; margin-bottom: 10px;">
       <span th:text="${errorMessage}">Error Message</span>
     </div>
+    <div th:if="${successMessage != null}" style="color: blue; margin-bottom: 10px;">
+      <span th:text="${successMessage}">success Message</span>
+    </div>
 
     <!-- Username -->
     <div>