PLT-3221 Remove async call to get posts when creating a comment and editing a post (#3300)

PLT-3203 Commenting on the RHS while in permalink view makes the message not show up in the RHS

webapp/components/post_view/components/post_list.jsx

@@ -137,7 +137,10 @@ export default class PostList extends React.Component {
     }
 
     loadMorePostsTop() {
-        GlobalActions.emitLoadMorePostsEvent();
+        if (this.props.isFocusPost) {
+            return GlobalActions.emitLoadMorePostsFocusedTopEvent();
+        }
+        return GlobalActions.emitLoadMorePostsEvent();
     }
 
     loadMorePostsBottom() {
@@ -522,5 +525,6 @@ PostList.propTypes = {
     displayNameType: React.PropTypes.string,
     displayPostsInCenter: React.PropTypes.bool,
     compactDisplay: React.PropTypes.bool,
-    previewsCollapsed: React.PropTypes.string
+    previewsCollapsed: React.PropTypes.string,
+    isFocusPost: React.PropTypes.bool
 };

webapp/components/post_view/post_focus_view_controller.jsx

@@ -115,6 +115,7 @@ export default class PostFocusView extends React.Component {
                     showMoreMessagesTop={!this.state.atTop}
                     showMoreMessagesBottom={!this.state.atBottom}
                     postsToHighlight={postsToHighlight}
+                    isFocusPost={true}
                 />
             );
         }