Multiple UI Improvements

* Multiple UI Improvements

* Adding app_body behind missing classes

webapp/components/posts_view.jsx

@@ -372,11 +372,13 @@ export default class PostsView extends React.Component {
             this.updateScrolling();
         }
         window.addEventListener('resize', this.handleResize);
+        $('body').addClass('app__body');
     }
     componentWillUnmount() {
         window.removeEventListener('resize', this.handleResize);
         this.scrollStopAction.cancel();
         PreferenceStore.removeChangeListener(this.updateState);
+        $('body').removeClass('app__body');
     }
     componentDidUpdate() {
         if (this.props.postList != null) {