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/exception/NoChangeException.kt

@@ -0,0 +1,23 @@
+package ltd.hlaeja.exception
+
+@Suppress("unused")
+open class NoChangeException : AccountRegistryException {
+
+    constructor() : super()
+
+    constructor(message: String) : super(message)
+
+    constructor(cause: Throwable) : super(cause)
+
+    constructor(
+        message: String,
+        cause: Throwable,
+    ) : super(message, cause)
+
+    constructor(
+        message: String,
+        cause: Throwable,
+        enableSuppression: Boolean,
+        writableStackTrace: Boolean,
+    ) : super(message, cause, enableSuppression, writableStackTrace)
+}