refactor import lines from 'react-bootstrap'

resource/js/components/NewPageNameInputter.js

@@ -1,5 +1,7 @@
 import React from 'react';
-import { FormGroup, Button, InputGroup } from 'react-bootstrap';
+import { FormGroup } from 'react-bootstrap/es/FormGroup';
+import { Button } from 'react-bootstrap/es/Button';
+import { InputGroup } from 'react-bootstrap/es/InputGroup';
 
 import UserPicture from './User/UserPicture';
 import PageListMeta from './PageList/PageListMeta';