Display mentions prepended to the content warning

app/assets/javascripts/components/components/status_content.jsx

@@ -102,8 +102,14 @@ const StatusContent = React.createClass({
     const spoilerContent = { __html: emojify(escapeTextContentForBrowser(status.get('spoiler_text', ''))) };
 
     if (status.get('spoiler_text').length > 0) {
-      const mentionLinks = status.get('mentions').map(item => <Permalink to={`/accounts/${item.get('id')}`} href={item.get('url')} key={item.get('id') className='mention'>@<span>{item.get('username')}</span></Permalink>}</span>) };
+      const mentionLinks = status.get('mentions').map(item => (
+        <Permalink to={`/accounts/${item.get('id')}`} href={item.get('url')} key={item.get('id')} className='mention'>
+          @<span>{item.get('username')}</span>
+        </Permalink>
+      )).reduce((aggregate, item) => [...aggregate, item, ' '], [])
+
       const toggleText = hidden ? <FormattedMessage id='status.show_more' defaultMessage='Show more' /> : <FormattedMessage id='status.show_less' defaultMessage='Show less' />;
+
       return (
         <div className='status__content' style={{ cursor: 'pointer' }} onMouseDown={this.handleMouseDown} onMouseUp={this.handleMouseUp}>
           <p style={{ marginBottom: hidden ? '0px' : '' }} >