disable save when there are no changes (#975)

fixes: #679

src/components/attribute-form/AttributeForm.tsx

@@ -177,11 +177,7 @@ export const AttributesForm = ({
           </Tbody>
         </TableComposable>
         <ActionGroup className="kc-attributes__action-group">
-          <Button
-            variant="primary"
-            type="submit"
-            isDisabled={!formState.isDirty}
-          >
+          <Button variant="primary" type="submit" isDisabled={!watchLast}>
             {t("common:save")}
           </Button>
           <Button

src/groups/GroupTable.tsx

@@ -47,7 +47,9 @@ export const GroupTable = () => {
   const loader = async () => {
     const groupsData = id
       ? (await adminClient.groups.findOne({ id })).subGroups
-      : await adminClient.groups.find();
+      : await adminClient.groups.find({
+          briefRepresentation: false,
+        } as unknown as any);
 
     if (!groupsData) {
       history.push(`/${realm}/groups`);