title: Can't get jhipster (6.3.1) generated application running on IE11
body: <p>I'm trying to get my <code>JHipster 6.3.1</code> generated application running in <code>IE 11</code> but keep on getting one <strong>error</strong> after another. Depending on which imports I use in <code>polyfill.ts</code> I get anything from 'Symbol' is undefined" to a plain "Syntax error" and sometimes no particular error at all, just a page with the generic JHipster</p>
  
  <blockquote>
    <p>An error has occurred :-(</p>
  </blockquote>
  
  <p>I've tried different combinations of <code>polyfills</code> and <code>tsconfig.json</code> settings. I've installed the recommended <code>polyfills</code> as per angular 8 docs, but it seems that <code>jhipsters angular != standard angular</code> as all pure <code>angular 8</code> documentation regarding <code>IE11</code> were unhelpful.</p>
  
  <p>I know <code>IE 11</code> is not supported anymore by <code>JHipster</code>, but since Angular has specific instructions on using <code>polyfills</code> and differential loading to get it working, I expected (assumed) it would be a fairly straight forward fix.</p>