Hi Folks! @verdan did some work to modularlize / modernize the UI for the rbac_ui in https://github.com/apache/incubator-airflow/pull/3572
In another commit (https://github.com/apache/incubator-airflow/pull/3641), @verdan added eslint support to the rbac_ui *Question 1* What's keeping us from moving over the new UI and deprecating the old one? *Question 2* It looks like the instructions for building the rbac UI is https://github.com/apache/incubator-airflow/blob/master/CONTRIBUTING.md#setting-up-the-node--npm-javascript-environment-only-for-www_rbac Verdan, you may want to update https://cwiki.apache.org/confluence/display/AIRFLOW/Releasing+Airflow -s
