Fixing some client warnings

web/react/components/post_info.jsx

@@ -150,7 +150,7 @@ export default class PostInfo extends React.Component {
             <ul className='post-header post-info'>
                 <li className='post-header-col'>
                     <OverlayTrigger
-                        delayShow='500'
+                        delayShow={500}
                         container={this}
                         placement='top'
                         overlay={tooltip}