fix ios pressure helper and click handler

src/Sidebar.js

@@ -3,7 +3,7 @@ import './Sidebar.css';
 
 export function Sidebar(props) {
     return (
-        <div className={props.content ? 'sidebar-on' : ''}>
+        <div className={props.title!==null ? 'sidebar-on' : ''}>
             <div className="sidebar-shadow" onClick={props.do_close} />
             <div className="sidebar">
                 {props.content}