Start admin area, create dashboard

app/soapbox/features/admin/components/admin_nav.js

@@ -0,0 +1,22 @@
+import React from 'react';
+import Icon from 'soapbox/components/icon';
+import { NavLink } from 'react-router-dom';
+import { FormattedMessage } from 'react-intl';
+
+export default
+class AdminNav extends React.PureComponent {
+
+  render() {
+    return (
+      <div className='wtf-panel promo-panel'>
+        <div className='promo-panel__container'>
+          <NavLink className='promo-panel-item' to='/admin'>
+            <Icon id='tachometer' className='promo-panel-item__icon' fixedWidth />
+            <FormattedMessage id='admin_nav.dashboard' defaultMessage='Dashboard' />
+          </NavLink>
+        </div>
+      </div>
+    );
+  }
+
+}