add grid icon

src/client/js/components/PageEditor/EditorIcon.jsx

@@ -73,9 +73,7 @@ const EditorIcon = (props) => {
       );
     case 'Grid':
       return (
-        <svg xmlns="http://www.w3.org/2000/svg" height="13" viewBox="0 0 20.3 16">
-          <path d="M19.1 16H1.2A1.2 1.2 0 0 1 0 14.8V1.2A1.2 1.2 0 0 1 1.2 0h17.9a1.2 1.2 0 0 1 1.2 1.2v13.6a1.2 1.2 0 0 1-1.2 1.2zm-5.2-4.3v3.2h5.3v-3.2zm-6.4 0v3.2h5.3v-3.2zm-6.4 0v3.2h5.3v-3.2zm12.8-4.2v3.2h5.3V7.5zm-6.4 0v3.2h5.3V7.5zm-6.4 0v3.2h5.3V7.5zm12.8-4.3v3.2h5.3V3.2zm-6.4 0v3.2h5.3V3.2zm-6.4 0v3.2h5.3V3.2z" />
-        </svg>
+        <i className="fa fa-th"></i>
       );
     case 'Table':
       return (