Added isRequired to PropTypes for Normal and Tabs Forms

Author: jonisaa

src/components/group/NormalForm.js

@@ -3,8 +3,8 @@ import Header from '../Header';
 
 export default class NormalForm extends Component {
 	static propTypes = {
-		content: PropTypes.array,
-		title: PropTypes.string
+		content: PropTypes.array.isRequired,
+		title: PropTypes.string.isRequired
 	};
 
 	render() {

src/components/group/TabsForm.js

@@ -3,8 +3,8 @@ import { Nav, NavItem } from 'react-bootstrap';
 
 export default class TabsForm extends Component {
 	static propTypes = {
-		content: PropTypes.array,
-		layout: PropTypes.object
+		content: PropTypes.array.isRequired,
+		layout: PropTypes.object.isRequired
 	};
 
 	state = {