Rewrite admin. (#1713)

* Rewrite admin.

* Clean up password forms.

* Fix naming issues.

* CSS Naming.

components/settings/ThemeSetting.js

@@ -1,5 +1,5 @@
 import classNames from 'classnames';
-import Button from 'components/common/Button';
+import { Button, Icon } from 'react-basics';
 import useTheme from 'hooks/useTheme';
 import Sun from 'assets/sun.svg';
 import Moon from 'assets/moon.svg';
@@ -12,14 +12,20 @@ export default function ThemeSetting() {
     <div className={styles.buttons}>
       <Button
         className={classNames({ [styles.active]: theme === 'light' })}
-        icon={<Sun />}
         onClick={() => setTheme('light')}
-      />
+      >
+        <Icon>
+          <Sun />
+        </Icon>
+      </Button>
       <Button
         className={classNames({ [styles.active]: theme === 'dark' })}
-        icon={<Moon />}
         onClick={() => setTheme('dark')}
-      />
+      >
+        <Icon>
+          <Moon />
+        </Icon>
+      </Button>
     </div>
   );
 }