title: Firebase deploy displays Welcome Screen with no App Content
body: <p>I cloned a quickstart angular application.
  I run <code>firebase init</code> and <code>firebase deploy</code>,
  and output shows deploy successful. I naviagate to the <a href="https://scratch-app-8fde2.firebaseapp.com/" rel="noreferrer">url</a>, but it just shows the Welcome screen. Why don't I see my content?</p>