Migrate add and edit outgoing webhook components to redux (#6818)

webapp/routes/route_integrations.jsx

@@ -47,13 +47,13 @@ export default {
                 {
                     path: 'add',
                     getComponents: (location, callback) => {
-                        System.import('components/integrations/components/add_outgoing_webhook.jsx').then(RouteUtils.importComponentSuccess(callback));
+                        System.import('components/integrations/components/add_outgoing_webhook').then(RouteUtils.importComponentSuccess(callback));
                     }
                 },
                 {
                     path: 'edit',
                     getComponents: (location, callback) => {
-                        System.import('components/integrations/components/edit_outgoing_webhook.jsx').then(RouteUtils.importComponentSuccess(callback));
+                        System.import('components/integrations/components/edit_outgoing_webhook').then(RouteUtils.importComponentSuccess(callback));
                     }
                 }
             ]