Fix ReCaptha NPE

Improve error handling when permission are removed.

wise-webapp/src/main/java/com/wisemapping/exceptions/AccessDeniedSecurityException.java

@@ -18,11 +18,21 @@
 
 package com.wisemapping.exceptions;
 
+import org.jetbrains.annotations.NotNull;
+
 public class AccessDeniedSecurityException
-    extends Exception
+    extends ClientException
 {
-    public AccessDeniedSecurityException(String msg)
+    public static final String MSG_KEY = "ACCESS_HAS_BEEN_REVOKED";
+
+    public AccessDeniedSecurityException(@NotNull String msg)
     {
         super(msg);
     }
+
+    @NotNull
+    @Override
+    protected String getMsgBundleKey() {
+        return MSG_KEY;
+    }
 }

wise-webapp/src/main/java/com/wisemapping/exceptions/ClientException.java

@@ -0,0 +1,20 @@
+package com.wisemapping.exceptions;
+
+import org.jetbrains.annotations.NotNull;
+import org.springframework.context.MessageSource;
+
+import java.util.Locale;
+
+abstract public class ClientException extends WiseMappingException {
+    public ClientException(@NotNull String message) {
+        super(message);
+    }
+
+    protected abstract
+    @NotNull
+    String getMsgBundleKey();
+
+    public String getMessage(@NotNull final MessageSource messageSource, final @NotNull Locale locale) {
+        return messageSource.getMessage(this.getMsgBundleKey(), null, locale);
+    }
+}