converted image picker to blade-based component

Also updated some other JS translations

app/Http/Controllers/AttachmentController.php

@@ -117,7 +117,7 @@ class AttachmentController extends Controller
         }
 
         $attachment = $this->attachmentService->updateFile($attachment, $request->all());
-        return $attachment;
+        return $this->jsonSuccess($attachment, trans('entities.attachments_updated_success'));
     }
 
     /**

app/Http/Controllers/Controller.php

@@ -117,6 +117,17 @@ abstract class Controller extends BaseController
         return true;
     }
 
+    /**
+     * Send a json respons with a message attached as a header.
+     * @param $data
+     * @param string $successMessage
+     * @return $this
+     */
+    protected function jsonSuccess($data, $successMessage = "")
+    {
+        return response()->json($data)->header('message-success', $successMessage);
+    }
+
     /**
      * Send back a json error message.
      * @param string $messageText