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/kotlin/ltd/hlaeja/util/Mapping.kt

@@ -1,6 +1,5 @@
 package ltd.hlaeja.util
 
-import ltd.hlaeja.exception.PasswordException
 import ltd.hlaeja.form.AccountForm
 import ltd.hlaeja.library.accountRegistry.Account
 import ltd.hlaeja.library.accountRegistry.Authentication
@@ -11,9 +10,9 @@ fun SpringAuthentication.toAuthenticationRequest(): Authentication.Request = Aut
     credentials as String,
 )
 
-fun AccountForm.toAccountRequest(): Account.Request = Account.Request(
+fun AccountForm.toAccountRequest(operation: (CharSequence?) -> CharSequence?): Account.Request = Account.Request(
     username = username,
-    password = password ?: throw PasswordException("Password requirements failed"),
+    password = operation(password),
     enabled = enabled,
     roles = listOf("ROLE_${role.uppercase()}"),
 )
@@ -21,5 +20,5 @@ fun AccountForm.toAccountRequest(): Account.Request = Account.Request(
 fun Account.Response.toAccountForm(): AccountForm = AccountForm(
     username = username,
     enabled = enabled,
-    role = roles.first().removePrefix("ROLE_").lowercase()
+    role = roles.first().removePrefix("ROLE_").lowercase(),
 )