Rewrite admin. (#1713)

* Rewrite admin.

* Clean up password forms.

* Fix naming issues.

* CSS Naming.

components/common/EmptyPlaceholder.js

@@ -1,15 +1,19 @@
 import React from 'react';
 import PropTypes from 'prop-types';
-import Icon from 'components/common/Icon';
+import { Icon, Flexbox } from 'react-basics';
 import Logo from 'assets/logo.svg';
 import styles from './EmptyPlaceholder.module.css';
 
 function EmptyPlaceholder({ msg, children }) {
   return (
     <div className={styles.placeholder}>
-      <Icon className={styles.icon} icon={<Logo />} size="xlarge" />
+      <Icon className={styles.icon} size="xl">
+        <Logo />
+      </Icon>
       <h2 className={styles.msg}>{msg}</h2>
-      {children}
+      <Flexbox justifyContent="center" alignItems="center">
+        {children}
+      </Flexbox>
     </div>
   );
 }