Fixed bug - files/uploaded had wrong owner

Upgrade to React 16

client/src/send-configurations/CUD.js

@@ -42,13 +42,16 @@ import styles
 
 import mailtrainConfig
     from 'mailtrainConfig';
+import {withComponentMixins} from "../lib/decorator-helpers";
 
 
-@withTranslation()
-@withForm
-@withPageHelpers
-@withErrorHandling
-@requiresAuthenticatedUser
+@withComponentMixins([
+    withTranslation,
+    withForm,
+    withErrorHandling,
+    withPageHelpers,
+    requiresAuthenticatedUser
+])
 export default class CUD extends Component {
     constructor(props) {
         super(props);