added icon-bell into navbar

packages/app/src/components/Navbar/GrowiNavbar.jsx

@@ -27,6 +27,9 @@ class GrowiNavbar extends React.Component {
 
     return (
       <>
+        <button className="px-md-2 nav-link btn-create-page border-0 bg-transparent" type="button">
+          <i className="icon-bell mr-2"></i>
+        </button>
         <li className="nav-item d-none d-md-block">
           <button className="px-md-2 nav-link btn-create-page border-0 bg-transparent" type="button" onClick={navigationContainer.openPageCreateModal}>
             <i className="icon-pencil mr-2"></i>