Merge ui and ui_next in one dir

Merge ui and ui_next in one dir

See: https://github.com/ansible/awx/issues/10676

Update django .po files

Update django .po files

Run `awx-manage makemessages`.

awx/ui/testUtils/testUtils.js

@@ -0,0 +1,4 @@
+
+const sleep = (ms) => new Promise(resolve => setTimeout(resolve, ms));
+/* eslint-disable-next-line import/prefer-default-export */
+export { sleep };