shorthand replacements for React.Fragment and <span>

src/widgets/error-panel.jsx

@@ -35,14 +35,14 @@ export default class ErrorPanel extends React.PureComponent {
     return (
       <div className={className}>
         <div className="icon"><i className="material-icons">{level}</i></div>
-        <span>
+        <>
           <span dangerouslySetInnerHTML={{__html: this.props.text}} />
           {this.props.action ?
             <a href="#" onClick={(e) => {e.preventDefault(); this.props.action();}}>
               {this.props.actionText}
             </a>
           : null}
-        </span>
+        </>
         <div className="cancel"><MenuCancel onCancel={this.hide} /></div>
       </div>
     );